Yasunori Oumi

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Name
Yasunori Oumi
Alternative names
Yasunori Oumi
Affiliation
Gifu University
Section
Life Science Research Center Division of Instrumental Analysis
Research funding number
50313713

Research Areas

 

Academic & Professional Experience

 
Dec 2009
 - 
Today
Associate Professor, Gifu University
 
Apr 2006
 - 
Nov 2009
Assistant Professor, Hiroshima University
 
Apr 1999
 - 
Mar 2006
Assistant Professor, Japan Advanced Institute of Science and Technology
 
Apr 1997
 - 
Mar 1999
Research Fellowship for Young Scientists, Japan Society for the Promotion of Science
 

Published Papers

 
Reina Inoue, Kyohei Ueno, Saki Yamada, Hideyuki Negishi, Manabu Miyamoto, Shigeyuki Uemiya, Yasunori Oumi
Microporous and Mesoporous Materials   285 241-246   Sep 2019
© 2019 Novel hydrophilic PML-1 (PML: porous material transformed from a layered silicate) membranes were prepared on a porous tubular α-alumina support by a calcination-driven topotactic transformation of a hydrothermally pre-coated layered silica...
Manabu Miyamoto, Haruna Iwatsuka, Yasunori Oumi, Shigeyuki Uemiya, Stijn Van den Perre, Gino V. Baron, Joeri F.M. Denayer
Chemical Engineering Journal   292-299   May 2019
© 2019 Elsevier B.V. Due to its shape selective properties, the narrow pore chabazite zeolite is an interesting material for the separation and purification of 1-butanol from ABE (acetone-butanol-ethanol) fermentation broth, as it selectively trap...
Kazuhiro Kobayashi, Naoki Watanabe, Teruaki Oka, Hiroyuki Tomita, Natsuko Suzui, Yasunori Oumi, Akira Hara, Tatsuhiko Miyazaki
Pathology International   69 229-234   Apr 2019
© 2019 Japanese Society of Pathology and John Wiley & Sons Australia, Ltd A 73-year-old Japanese man, who worked at a confectionery company for more than 20 years, was diagnosed with a 28 mm nodular lesion in the superior lobe of the right lung ...
Sana Miyagawa, Koji Miyake, Yuichiro Hirota, Norikazu Nishiyama, Manabu Miyamoto, Yasunori Oumi, Shunsuke Tanaka
Microporous and Mesoporous Materials   219-224   Apr 2019
© 2018 Elsevier Inc. An efficient and simple methodology was proposed to synthesize CHA zeolite without the use of solvent and OSDA. The synthesis strategy is based on a mechanochemical-assisted interzeolite transformation using only Na-type FAU z...
Kyohei Ueno, Hideyuki Negishi, Manabu Miyamoto, Shigeyuki Uemiya, Yasunori Oumi
Microporous and Mesoporous Materials   267 1-8   Sep 2018   [Refereed]
© 2018 Elsevier Inc. Silicalite-1 zeolite membranes were prepared on porous tubular α-Al2O3 supports by a secondary growth method. The influences of the Si/Al ratio and the amount of deposited MFI (silicalite-1 and ZSM-5) seed crystals on membrane...
Manabu Miyamoto, Shumpei Ono, Kodai Kusukami, Yasunori Oumi, Shigeyuki Uemiya
ChemSusChem   11(11) 1756-1760   Jun 2018   [Refereed]
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Dehumidification in CO2 adsorptive separation processes is an important issue, owing to its high energy consumption. However, available adsorbents such as low-silica zeolites show a significant d...
Kyohei Ueno, Kyohei Ueno, Yui Horiguchi, Hideyuki Negishi, Manabu Miyamoto, Sigeyuki Uemiya, Akiyoshi Takeno, Yoshiharu Sawada, Yasunori Oumi
Microporous and Mesoporous Materials   261 58-62   May 2018   [Refereed]
© 2017 Elsevier Inc. A highly reproducible silicalite-1 membrane with high pervaporation performance was successfully prepared on a tubular silica support by a novel seeding method using a zeolite-dispersed polymer film. The proposed seeding metho...
H. Negishi, K. Ueno, K. Ueno, Y. Oumi
ECS Transactions   82(1) 13-18   Jan 2018   [Refereed]
© The Electrochemical Society. Using a porous alumina support, seeding for the preparation of a zeolite separation membrane is conducted by placing the electrodes for electrophoretic deposition (EPD) on both sides of the support. In this case, two...
Hori K, Higuchi T, Aoki Y, Miyamoto M, Oumi Y, Yogo K, Uemiya S.
Microporous and Mesoporous Materials   246 158-165   Jul 2017   [Refereed]
Miyamoto M, Hori K, Goshima T, Takaya N, Oumi Y, Uemiya S.
European Journal of Inorganic Chemistry   2017(14) 2094-2099   Apr 2017   [Refereed]
Ueno K, Negishi H, Miyamoto M, Uemiya S, Oumi Y.
Separation and Purification Technology   174 57-65   Mar 2017   [Refereed]
Manabu Miyamoto, Akira Hamajima, Yasunori Oumi, Shigeyuki Uemiya
International Journal of Hydrogen Energy   43(2) 730-738   Jan 2017   [Refereed]
© 2017 Hydrogen Energy Publications LLC. The basicity of ZrO 2 support was successfully controlled by doping La and alkaline earth metals. La doping significantly increased weak basic sites, and medium and strong basic sites appeared by the furthe...
Miyamoto M, Hayakawa C, Oumi Y, Uemiya S.
Journal of Chemical Engineering of Japan   50(1) 20-20   Jan 2017   [Refereed]
Takagi T, Kawamura I, Oumi Y, Miwa Y, Yoshitake H.
Polymer (United Kingdom)   132 227-234   2017   [Refereed]
Ueno K, Negishi H, Okuno T, Saito T, Tawarayama H, Ishikawa S, Miyamoto M, Uemiya S, Sawada Y, Oumi Y.
Journal of Membrane Science   542 150-158   2017   [Refereed]
Ueno K, Negishi H, Okuno T, Saito T, Tawarayama H, Ishikawa S, Miyamoto M, Uemiya S, Sawada Y, Oumi Y.
Separation and Purification Technology   187 343-354   2017   [Refereed]
Monguchi Y, Okami H, Ichikawa T, Nozaki K, Maejima T, Oumi Y, Sawama Y, Sajiki H.
Advanced Synthesis and Catalysis   358(19) 3145-3151   Oct 2016   [Refereed]
Manabu Miyamoto, Jun Kamada, Yasunori Oumi, Shigeyuki Uemiya
Advanced Porous Materials   4(2) 102   Sep 2016   [Refereed]
Miyamoto Manabu, Yoshikawa Yuki, Oumi Yasunori, Yamaura Shin-ichi, Uemiya Shigeyuki
PROCESSES   4(2) 18   Jun 2016   [Refereed]
Takahashi S, Kurita Y, Ikeda T, Miyamoto M, Uemiya S, Oumi Y.
Dalton Transactions   45(41) 16335-16344   2016   [Refereed]
Nao Tsunoji, Sota Yuki, Yasunori Oumi, Miyuki Sekikawa, Yukichi Sasaki, Masahiro Sadakane, Tsuneji Sano
ACS Applied Materials and Interfaces   7(43) 24360-24369   Nov 2015   [Refereed]
© 2015 American Chemical Society. The attractive properties of zeolites, which make them suitable for numerous applications for the energy and chemical industries and for life sciences, are derived from their crystalline framework structures. Here...
Yasunari Monguchi, Takahisa Marumoto, Tomohiro Ichikawa, Yutaka Miyake, Yoshiyuki Nagae, Michiyuki Yoshida, Yasunori Oumi, Yoshinari Sawama, Hironao Sajiki
ChemCatChem   7(14) 2155-2160   Jul 2015   [Refereed]
© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. A heterogeneous palladium catalyst supported on a ceramic (5 % Pd/ceramic) was developed. The catalyst exhibited a specific chemoselectivity for hydrogenation that has never been achieved by other...
Shunsuke Tanaka, Shunsuke Tanaka, Hiroki Fujimoto, Joeri F M Denayer, Manabu Miyamoto, Yasunori Oumi, Yoshikazu Miyake, Yoshikazu Miyake
Microporous and Mesoporous Materials   217 141-149   Jul 2015   [Refereed]
© 2015 Elsevier Inc. All rights reserved. The increasing demand for energy has triggered numerous research efforts for the development of electricity storage devices consisting of templated nanoporous carbons. In this study, ordered mesoporous car...
Manabu Miyamoto, Kota Mabuchi, Jun Kamada, Yuichiro Hirota, Yasunori Oumi, Norikazu Nishiyama, Shigeyuki Uemiya
Journal of Porous Materials   22(3) 769-778   Jun 2015   [Refereed]
© 2015, Springer Science+Business Media New York. MFI type galloaluminosilicates (GaAlMFI) were coated with inert silicalite-1 layers. The silicalite-1 coating could improve the para-selectivity for xylene production in aromatization of propane. I...
M. Miyamoto, S. Kohmura, H. Iwatsuka, Y. Oumi, S. Uemiya
CrystEngComm   17(18) 3422-3425   May 2015   [Refereed]
© 2015 The Royal Society of Chemistry. A highly oriented UiO-66 film, with a monocrystalline layer, was successfully prepared by the solvothermal method. Acetic acid, which served as a modulator, was essential to achieve high film orientation. Wat...
Manabu Miyamoto, Masami Arakawa, Yasunori Oumi, Shigeyuki Uemiya
International Journal of Hydrogen Energy   40(6) 2657-2662   Jan 2015   [Refereed]
© 2015 Hydrogen Energy Publications, LLC. The catalytic activity of metal cation doped Ru/CeO2/Al2O3 as pre-reforming catalysts for steam reforming of desulfurized kerosene was investigated at a moderate temperature. The oxygen storage capacity (O...
Keisuke Mishiro, Takahiko Imai, Sou Sugitani, Akira Kitashoji, Yukiya Suzuki, Toshinori Takagi, Toshinori Takagi, Huayue Chen, Yasunori Oumi, Kazuhiro Tsuruma, Masamitsu Shimazawa, Hideaki Hara
PLoS ONE   9(8)    Aug 2014   [Refereed]
Diabetes is a crucial risk factor for stroke and is associated with increased frequency and poor prognosis. Although endothelial dysfunction is a known contributor of stroke, the underlying mechanisms have not been elucidated. The aim of this stud...
Manabu Miyamoto, Risa Hayakawa, Yasutaka Makino, Yasuhiro Oumi, Shigeyuki Uemiya, Minoru Asanuma
International Journal of Hydrogen Energy   39 10154-10160   Jun 2014
Combination of the reactions by means of membrane separation techniques are of interest. The CO 2 methanation was combined with NH 3 decomposition by in situ H 2 separation through a Pd membrane. The CO 2 methanation reaction in the permeate side ...
Manabu Miyamoto, Mai Tokiwa, Yasunori Oumi, Shigeyuki Uemiya
Journal of Alloys and Compounds   577 445-450   Sep 2013   [Refereed]
Stainless-steel, Ni, Cr and Fe particles were adhered on Pd and Pd alloy membranes in order to investigate an effect of alloying of such metal components and membranes to the membrane performance. The adhesion of metal particles to Pd and Pd alloy...
Takuji Ikeda, Takako Nagase, Norihito Hiyoshi, Yasunori Oumi
Microporous and Mesoporous Materials   163 42-50   Nov 2012   [Refereed]
We investigated the change in the crystal structure and thermal stability of the synthetic -LIT type zeolite [Si 8.74Al 3.26O 26H 2K 5.26] by ion exchange with ammonia. In the NH 4 + ion exchange, the crystal structure was considerably changed acc...
Sadanobu Sumiya, Sadanobu Sumiya, Jun Fujiwara, Yasunori Oumi, Masahiro Sadakane, Tsuneji Sano
Journal of Porous Materials   18(4) 493-500   Aug 2011   [Refereed]
Incorporation of aluminum on the inner surfaces of mesopores was carried out under hydrothermal conditions for synthesizing mesoporous silica using an anionic surfactant. The synthesis concept was based on ionic interactions between aluminum catio...
MABUCHI Kota, MIYAMOTO Manabu, OUMI Yasunori, UEMIYA Sigeyuki
Bulletin of The Japan Petroleum Institute   54(4) 275-276   Jul 2011   [Refereed]
MFI type galloaluminosilicate (GaAlMFI) was coated with siliceous MFI type zeolite, silicalite-1. Silicalite-1 could be grown secondarily on GaAlMFI crystals. The silicalite-1 coating enhanced the para-xylene selectivity from 57 to 80% during arom...
Nobuaki Ikawa, Hideki Hori, Tatsuo Kimura, Yasunori Oumi, Tsuneji Sano
Microporous and Mesoporous Materials   141(1-3) 56-60   May 2011   [Refereed]
Wormhole-like mesostructured calcium phosphates with different Ca/P molar ratios were prepared using 4-dodecyldiethylenetriamine and N-lauroyl-l-glutamic acid. Structural variations in meso- and micro-scales during calcination of the mesostructure...
Takuji Ikeda, Yasunori Oumi, Koutaro Honda, Tsuneji Sano, Koichi Momma, Fujio Izumi
Inorganic Chemistry   50(6) 2294-2301   Mar 2011   [Refereed]
A new layered silicate, HUS-1, was synthesized by hydrothermal synthesis using decomposed FAU-and *BEA-type zeolites as nanosized silica parts. Structural analyses by X-ray powder diffractometry and solid-state magic-angle-spinning (MAS) NMR spect...
Yasunori Oumi, Takuya Manabe, Hitoshi Sasaki, Toshiyasu Inuzuka, Tsuneji Sano
Applied Catalysis A: General   388(1-2) 256-261   Nov 2010   [Refereed]
Ti incorporated Y zeolites were prepared by post-synthesis treatment of a dealuminated USY zeolite with an aqueous solution of (NH4) 2TiF6, and characterized by XRD, 27Al MAS NMR, FT-IR, SEM, TEM, UV-vis, and XANES techniques. The results showed t...
Daisuke Goto, Yasumitsu Harada, Yoshiyasu Furumoto, Atsushi Takahashi, Tadahiro Fujitani, Yasunori Oumi, Masahiro Sadakane, Tsuneji Sano
Applied Catalysis A: General   383(1-2) 89-95   Jul 2010   [Refereed]
Protonated ZSM-5 type zeolites containing alkaline earth metals (M-HZSM-5, M: alkaline earth metal) were prepared under various synthesis conditions and their catalytic performance in the conversion of ethanol to light olefins, especially propylen...
Masaya Itakura, Yasunori Oumi, Masahiro Sadakane, Tsuneji Sano
Materials Research Bulletin   45(5) 646-650   May 2010   [Refereed]
High-silica offretite (Si/Al = 7.6-8.0) with no or very little amount of erionite was successfully obtained by the interzeolite conversion of faujasite used as a starting material in the presence of both benzyltrimethylammonium hydroxide and the s...
Yu Gonda, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Colloids and Surfaces A: Physicochemical and Engineering Aspects   360(1-3) 159-166   May 2010   [Refereed]
Various assembled structures of polysilsesquioxane nanosheets NH2C3H6SiO1.5 were provided by chemical transformations of lamellar polysilsesquioxane C11H23COOH-NH2C3H6SiO1.5 (LAS-NH2C3H6SiO1.5) in order to expose aminopropyl functions in the inter...
Sasaki Hitoshi(Hiroshima University),Oumi Yasunori(Gifu University),Sadakane Masahiro(Hiroshima University),Sano Tsuneji(Hiroshima University)
30(6) 1537-1541   Apr 2010
Takuji Ikeda, Syunsuke Kayamori, Yasunori Oumi, Fujio Mizukami
Journal of Physical Chemistry C   114(8) 3466-3476   Mar 2010   [Refereed]
Four kinds of Si-atom pillared lamellar silicates (APZ-1-APZ-4) were prepared by thermal acid treatment in an autoclave at 443 K for 1-24 h using aqueous HCl. Layered silicates PLS-1, PLS-3, PLS-4, and PREFER, which consist of ferrierite layer she...
Hideaki Yoshitake, Hitomi Nakajima, Yasunori Oumi, Tsuneji Sano
Journal of Materials Chemistry   20(10) 2024-2032   Mar 2010   [Refereed]
We synthesized lamellar solids by co-condensation of 3-(2-aminoethylamino) propyltriethoxysilane (AeAPTES) and tetraethyl orthosilicate (TEOS) in the presence of hexadecylsuccinic acid (C16SA) and hexadecanol (C 16OH) producing a composition in th...
Sadanobu Sumiya, Sadanobu Sumiya, Yuka Kubota, Yasunori Oumi, Masahiro Sadakane, Tsuneji Sano
Applied Catalysis A: General   372(1) 82-89   Jan 2010   [Refereed]
The calcination and thermal degradation behaviors of surfactants in mesoporous silicas SBA-15 and MCM-41 were investigated by FT-IR, 13C CP/MAS NMR, TG/DTA, and GPC. It was found that carboxylic acid-containing products were generated as active co...
Yasunori Oumi, Kaori Takagi, Takuji Ikeda, Hitoshi Sasaki, Toshiro Yokoyama, Tsuneji Sano
Journal of Porous Materials   16(6) 641-649   Dec 2009   [Refereed]
The structural conversion of magadiite, a crystalline layered silicate, was investigated in detail. By a precise control of the stacking sequence and the configuration of silanol groups in the interlayer through the intercalation of acetic acid mo...
Hitomi Nakajima, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Bulletin of the Chemical Society of Japan   82(10) 1313-1321   Oct 2009   [Refereed]
We demonstrate that the dehydration condensation of 3-aminopropylsilane (APTES) and 3-(2-aminoethyl)amino- propylsilane (AeAPTES) in the presence of alkylsuccinate and alkanoicacid provide layered polysiloxanes where the interlayer is filled with ...
Sadanobu Sumiya, Sadanobu Sumiya, Yasunori Oumi, Masahiro Sadakane, Tsuneji Sano
Applied Catalysis A: General   365(2) 261-267   Aug 2009   [Refereed]
Hydrated niobium oxide (niobic acid) was effectively supported on mesoporous silica SBA-15 by HCl treatment of colloidal niobium oxide solution. The obtained Nb/SBA-15 exhibited high thermal stability, with no crystallization of niobium oxide. The...
H. Sasaki, H. Jon, M. Itakura, T. Inoue, T. Ikeda, Y. Oumi, T. Sano
Journal of Porous Materials   16(4) 465-471   Aug 2009   [Refereed]
The hydrothermal conversion of FAU zeolite into aluminous MTN zeolite is described here. In the presence of both benzyltrimethylammonium hydroxide (BTMAOH) and sodium chloride (NaCl) the highly crystalline and pure MTN zeolites with Si/Al ratios o...
Nobuaki Ikawa, Tatsuo Kimura, Yasunori Oumi, Tsuneji Sano
Journal of Materials Chemistry   19(28) 4906-4913   Jul 2009   [Refereed]
Amorphous calcium phosphates can be obtained successfully in the presence of l-glutamic acid (Glu), l-aspartic acid (Asp), and l-lysine (Lys) with carboxyl and amino groups that are present in biomolecules such as collagen. Composition (Ca/P molar...
Toru Ikegami, Tomotake Morita, Shunichi Nakayama, Hideyuki Negishi, Dai Kitamoto, Keiji Sakaki, Yasunori Oumi, Tsuneji Sano, Kenji Haraya, Hiroshi Yanagishita
Journal of Chemical Technology and Biotechnology   84(8) 1172-1177   Jul 2009   [Refereed]
Background: Pervaporation employing ethanol-permselective silicalite membranes as an alternative to distillation is a promising approach for refining low-concentration bioethanol solutions. However, tomake the separation process practicable, it is...
Dalin Li, Yingying Zhan, Kazufumi Nishida, Yasunori Oumi, Tsuneji Sano, Tetsuya Shishido, Katsuomi Takehira
Applied Catalysis A: General   363(1-2) 169-179   Jul 2009   [Refereed]
"Green" preparation of "intelligent" catalysts for daily start-up and shut-down steam reforming of CH4 for the reformer of the PEFCs has been investigated; trace Pt-doped Ni/[MgxAl]O (x = 0.5, 1.3 and 3.5) catalysts were prepared starting from com...
Yingying Zhan, Dalin Li, Kazufumi Nishida, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Clay Science   45(3) 147-154   Jul 2009   [Refereed]
Ni/[MgxAl]O (x = 3.5, 1.5 and 0.5) doped with trace amounts of Pt were prepared from Mg-Al layered double hydroxides (LDHs) aiming the "green" preparations of "intelligent" reforming catalysts. Commercial Mg-Al LDHs were used as raw materials. The...
Takayuki Inoue, Masaya Itakura, Hery Jon, Yasunori Oumi, Atsushi Takahashi, Tadahiro Fujitani, Tsuneji Sano
Microporous and Mesoporous Materials   122(1-3) 149-154   Jun 2009   [Refereed]
The highly crystalline and pure LEV zeolite was obtained from the hydrothermal conversion of FAU zeolite as a crystalline aluminosilicate source in the presence of choline hydroxide. As LEV zeolite was not obtained from a conventional amorphous al...
Kazufumi Nishida, Dalin Li, Yingying Zhan, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Clay Science   44(3-4) 211-217   May 2009   [Refereed]
Trace amounts of MgO were doped on Cu/ZnO/Al2O3 catalysts with the Cu/Zn/Al molar ratio of 45/45/10 and tested for the water-gas shift (WGS) reaction. A mixture of Zn(Cu)-Al hydrotalcite (HT) and Cu/Zn aurichalcite was prepared by co-precipitation...
Yingying Zhan, Dalin Li, Kazufumi Nishida, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   356(2) 231-242   Mar 2009   [Refereed]
Trace amounts of Pt- and Ru-doped Ni/Mg(Al)O catalysts were prepared by a citrate method and tested in the oxidative reforming of C3H8 under daily start-up and shut-down (DSS) operation. The activity and the sustainability of the catalysts were co...
Kosuke Yamaguchi, Kei Inumaru, Yasunori Oumi, Tsuneji Sano, Shoji Yamanaka
Microporous and Mesoporous Materials   117(1-2) 350-355   Jan 2009   [Refereed]
Fundamental photocatalytic behaviors were investigated for mechanical mixtures of TiO2 crystalline particles (P25) and MFI type zeolite (silicalite) in the decomposition reaction of 2-propanol vapor in air for the first time. Mechanical mixing ena...
Dalin Li, Kazufumi Nishida, Yingying Zhan, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Clay Science   43(1) 49-56   Jan 2009   [Refereed]
Trace amount of Ru-doped Ni/Mg(Al)O catalyst was prepared from hydrotalcite precursor and was tested in the reforming of propane under daily start-up and shut-down (DSS) operation. Mg(Ni,Al)O periclase derived from the hydrotalcite was dispersed i...
Nobuaki Ikawa, Masaya Iwata, Yasunori Oumi, Tatsuo Kimura, Tsuneji Sano
Journal of Nanoscience and Nanotechnology   9(1) 627-633   Jan 2009   [Refereed]
A lamellar material composed of alternating layers of magnesium phosphate sheets and n-hexadecylammonium (n-C 1.6H 3.3NH) ions was synthesized by the reaction between magnesium acetate tetrahydrate and phosphoric acid. The chemical formula of the ...
Dalin Li, Kazufumi Nishida, Yingying Zhan, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   350(2) 225-236   Nov 2008   [Refereed]
Doping effects of Pt and Ru on Ni/Mg(Al)O catalysts were compared in daily start-up and shut-down operations of steam reforming of CH4. Trace Pt-doped catalyst showed better behavior than trace Ru-doped catalyst; the former was self-activated but ...
H. Jon, H. Sasaki, T. Inoue, M. Itakura, S. Takahashi, Y. Oumi, T. Sano
Studies in Surface Science and Catalysis   174(SUPPL. PART A) 229-232   Nov 2008   [Refereed]
The hydrothermal conversion of FAU type zeolite with various structure-directing agents was investigated. The highly crystalline and pure RUT and MTN type zeolites were obtained in the presence of tetramethylammonium hydroxide and benzyl-trimethyl...
Nobuaki Ikawa, Hideki Hori, Tatsuo Kimura, Yasunori Oumi, Tsuneji Sano
Langmuir   24(22) 13113-13120   Nov 2008   [Refereed]
Mesostructured calcium phosphates constructed by ionic frameworks were synthesized using carboxylic acid- and amine-type surfactants in mixed solvent systems of ethanol and water. A lamellar mesostructured calcium phosphate was prepared using palm...
Masaya Itakura, Takayuki Inoue, Atsushi Takahashi, Tadahiro Fujitani, Yasunori Oumi, Tsuneji Sano
Chemistry Letters   37(9) 908-909   Sep 2008   [Refereed]
A highly crystalline and pure high-silica chabazite zeolite with a Si/Al ratio of ca. 17 was obtained by the hydrothermal conversion of FAU zeolite used as a crystalline Si/Al source in benzyltrimethylammonium hydroxide media. Copyright © 2008 The...
Hery Jon, Shoutarou Takahashi, Hitoshi Sasaki, Yasunori Oumi, Tsuneji Sano
Microporous and Mesoporous Materials   113(1-3) 56-63   Aug 2008   [Refereed]
The highly crystalline and pure RUT (RUB-10) zeolite could be obtained from the hydrothermal conversion of FAU zeolite used as a crystalline Si/Al source in tetramethylammonium hydroxide (TMAOH) media. As compared to amorphous silica/Al(OH)3 and a...
Hery Jon, Nobuaki Ikawa, Yasunori Oumi, Tsuneji Sano
Chemistry of Materials   20(12) 4135-4141   Jun 2008   [Refereed]
The use of FAU zeolite as a starting material was found to enhance the crystallization rate of *BEA zeolite, suggesting that the dissolution of FAU zeolite provides locally ordered aluminosilicate species that assemble and evolve into *BEA zeolite...
Nobuaki Ikawa, Yasunori Oumi, Tatsuo Kimura, Takuji Ikeda, Tsuneji Sano
Journal of Materials Science   43(12) 4198-4207   Jun 2008   [Refereed]
Lamellar mesostructured calcium phosphates constructed by ionic bonds were prepared by using n-alkylamines (n-C n H2n+1NH 2, n = 8-18) at room temperature in the mixed solvent systems of aliphatic alcohol (C n H2n+1OH, n = 1-4) and water, and the ...
T. Ikeda, Y. Oumi, T. Takeoka, T. Yokoyama, T. Sano, T. Hanaoka
Microporous and Mesoporous Materials   110(2-3) 488-500   Apr 2008   [Refereed]
The systematic study on the synthetic route of the siliceous zeolite RWR with a small 8-MR straight channel by topotactic conversion of crystalline layered silicate RUB-18 was carried out by using several topotactic precursors obtained from Na-RUB...
Kazufumi Nishida, Ikuo Atake, Dalin Li, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   337(1) 48-57   Mar 2008   [Refereed]
Trace amounts of noble metal were doped on Cu/ZnO/Al2O3 catalysts by adopting "memory effect" of hydrotalcite. Ternary Cu/ZnO/Al2O3 (molar ratio Cu/Zn = 1/1, Al content 0-25 mol%) catalysts were prepared by co-precipitation (cp) from metal nitrate...
Dalin Li, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   332(1) 98-109   Nov 2007   [Refereed]
Ni/Mg(Al)O catalyst doped with trace amounts of Rh was tested in steam reforming of methane and the catalytic behavior was compared with the Ru-doped catalyst. Rh-doped Ni/Mg(Al)O catalyst showed a self-activation without any reduction treatment d...
Yasunori Oumi, Jou Takahashi, Kazuyoshi Takeshima, Tsuneji Sano
Studies in Surface Science and Catalysis   170(A) 604-609   Oct 2007   [Refereed]
To clarify the realumination behavior of Y zeolite, dealuminated Y zeolites by steaming were treated with aqueous solutions of various ammonium salts and the obtained Y zeolites were characterized in detail. It was found that a part of non-framewo...
Nobuaki Ikawa, Yasunori Oumi, Tatsuo Kimura, Takuji Ikeda, Tsuneji Sano
Studies in Surface Science and Catalysis   165 253-256   Oct 2007   [Refereed]
Takayuki Chujo, Yu Gonda, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Studies in Surface Science and Catalysis   165 433-436   Oct 2007   [Refereed]
Tomohisa Miyajima, Sébastien Abry, Wenjuan Zhou, Belén Albela, Laurent Bonneviot, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Journal of Materials Chemistry   17(37) 3901-3909   Sep 2007   [Refereed]
We present here the results of the substitution of 3- bromopropyltriethoxysilane-grafted mesoporous SBA15 (pore size 7.6 nm) with a series of diamines, CH3NH(CH2)nNHCH3 (C2DA, C3DA and C6DA for n = 2, 3 and 6, respectively) or NH 2(CH2)nNH2 (C4DA ...
Ikuo Atake, Kazufumi Nishida, Dalin Li, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Journal of Molecular Catalysis A: Chemical   275(1-2) 130-138   Sep 2007   [Refereed]
Ternary Cu/ZnO/Al2O3 catalysts have been prepared by homogeneous precipitation (hp) using urea hydrolysis and tested for the water-gas shift reaction. The Cu/Zn ratio was fixed at 1/1, and the effects of the Al addition on the precipitation proced...
Dalin Li, Ikuo Atake, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Journal of Catalysis   250(2) 299-312   Sep 2007   [Refereed]
Ni/Mg(Al)O catalysts doped with trace Ru showed self-regenerative activity during a daily start-up and shut-down (DSS) operation of steam reforming of methane. Formation of Ru{single bond}Ni alloy on the surface of fine Ni metal particles on the c...
Hery Jon, Yasunori Oumi, Keiji Itabashi, Tsuneji Sano
Journal of Crystal Growth   307(1) 177-184   Sep 2007   [Refereed]
The addition of Na+ cations to the starting gel prepared using NH4F significantly prolonged the crystallization time of beta zeolite. However, in the case of pure silica beta zeolite an addition of more NH4F reduced the crystallization time by one...
Yasunori Oumi, Takehide Kanai, Baowang Lu, Tsuneji Sano
Microporous and Mesoporous Materials   101(1-2 SPEC. ISS.) 127-133   Apr 2007   [Refereed]
The structural and physico-chemical properties of high-silica mordenite (MOR) zeolite were investigated using chemical computational techniques and then the results obtained were compared with our experimental data. With an increase in the size of...
Yasunori Oumi, Takeshi Takeoka, Takuji Ikeda, Toshiro Yokoyama, Tsuneji Sano
New Journal of Chemistry   31(4) 593-597   Apr 2007   [Refereed]
The intercalation of acetic acid into the crystalline layered silicate octosilicate was found to take place efficiently and give a new type of layered structure. The highly crystalline RWR-type zeolite was successfully prepared by the dehydration-...
Dalin Li, Masato Shiraga, Ikuo Atake, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   321(2) 155-164   Apr 2007   [Refereed]
Ru (0.1-0.5 wt%) loaded Ni/Mg(Al)O catalysts have been prepared by adopting the "memory effect," i.e., the reconstitution of Mg(Ni)-Al hydrotalcite from the Mg(Ni, Al)O periclase after the heat-treatment, and their catalytic activities have been t...
Kojiro Nakai, Yasunori Oumi, Haruyuki Horie, Tsuneji Sano, Hideaki Yoshitake
Microporous and Mesoporous Materials   100(1-3) 328-339   Mar 2007   [Refereed]
Bromination and subsequent ethylenediamine substitution of the C{double bond, long}C double bond in mesoporous ethylenesilica were carried out to explore the characteristics of this periodic mesoporous organosilica. The structures of the products ...
Yasunori Oumi, Jou Takahashi, Kazuyoshi Takeshima, Hery Jon, Tsuneji Sano
Journal of Porous Materials   14(1) 19-26   Mar 2007   [Refereed]
Dealuminated zeolites Y were treated with aqueous solutions of various acids and ammonium salts to investigate the realumination behavior under acidic conditions. From the results of 27Al MAS NMR, 29Si MAS NMR and FT-IR measurements, it was found ...
Baowang Lu, Baowang Lu, Takahide Kanai, Yasunori Oumi, Tsuneji Sano, Tsuneji Sano
Journal of Porous Materials   14(1) 89-96   Mar 2007   [Refereed]
The Al distribution in high-silica mordenite (MOR) zeolites with various Si/Al ratios was investigated by FT-IR spectroscopy in the presence of CD 3CN probe molecules and benzene adsorption. Two adsorption bands assigned to CN stretching vibration...
Takeshi Miyata, Masato Shiraga, Dalin Li, Ikuo Atake, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Catalysis Communications   8(3) 447-451   Mar 2007   [Refereed]
Effects of Ru addition on the activity and the sustainability of Ni/Mg(Al)O catalysts were investigated in the daily start-up and shut-down (DSS) operation of the steam reforming of CH4. Mg2.5(Ni0.5)-Al hydrotalcite was prepared by coprecipitation...
Masato Shiraga, Dalin Li, Ikuo Atake, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   318 143-154   Feb 2007   [Refereed]
Effect of the addition of small amount of noble metal, i.e. Ru, Rh, Pd, Ir or Pt, in the Ni/Mg(Al)O catalyst on the catalytic activity for the partial oxidation of propane has been investigated. Mg2.5(Ni0.5)-Al hydrotalcite was prepared by co-prec...
Takayuki Chujo, Yu Gonda, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Journal of Materials Chemistry   17(14) 1372-1380   Jan 2007   [Refereed]
A new layered organosilicate with a multi-layer LB film-like structure, in which the carboxyl groups are connected to each other via a 3- aminopropylsilicate layer, is successfully synthesized by a self-assembly process using alkanoic acid (C<inf>...
Hery Jon, Keisuke Nakahata, Baowang Lu, Yasunori Oumi, Tsuneji Sano
Microporous and Mesoporous Materials   96(1-3) 72-78   Nov 2006   [Refereed]
The synthesis of *BEA zeolite was performed using two kinds of starting materials; dealuminated FAU zeolite and amorphous-silica/γ-alumina. When the amount of tetraethylammonium hydroxide (TEAOH) added as a structure-directing agent was small, a l...
Baowang Lu, Youzou Yakushi, Yasunori Oumi, Keiji Itabashi, Tsuneji Sano
Microporous and Mesoporous Materials   95(1-3) 141-145   Oct 2006   [Refereed]
An influence of quenching in the course of crystallization process of high-silica mordenite zeolite (MOR) on the crystallization rate and crystal size was investigated in detail. It was found that the crystallization rate is considerably enhanced ...
Takayuki Chujo, Yu Gonda, Yasunori Oumi, Tsuneji Sano, Hideaki Yoshitake
Chemistry Letters   35(10) 1198-1199   Oct 2006   [Refereed]
We synthesized a layered organosilica with a self-assembled alkanoate interlayer. The bond between the alkanoate and aminopropylsiloxane is critical for the formation of such a structure. The surfactant can be exchanged with alkanoate with a diffe...
Takeshi Miyata, Dalin Li, Masato Shiraga, Tetsuya Shishido, Yasunori Oumi, Tsuneji Sano, Katsuomi Takehira
Applied Catalysis A: General   310(1-2) 97-104   Aug 2006   [Refereed]
Effects of the additions of noble metal, i.e. Rh, Pd and Pt, on Ni/Mg(Al)O catalyst have been investigated for the daily start-up and shut-down (DSS) operation under steam purging in the steam reforming of CH4. Mg2.5(Ni0.5)-Al hydrotalcite was pre...
Nobuaki Ikawa, Yasunori Oumi, Tatsuo Kimura, Takuji Ikeda, Tsuneji Sano
Chemistry Letters   35(8) 948-949   Aug 2006   [Refereed]
A novel lamellar mesostructured calcium phosphate was synthesized at room temperature by using n-hexadecylamine in the EtOH/H 2O system, which controlled the solubility of calcium source and the preferential formation of crystalline calcium phosph...
Baowang Lu, Yasunori Oumi, Tsuneji Sano
Journal of Crystal Growth   291(2) 521-526   Jun 2006   [Refereed]
Large mordenite (MOR) zeolite crystals with 60-85 μm in length were easily obtained from the low-water content system without any additives. From nitrogen adsorption, it was found that the as-synthesized MOR(Na+MOR) zeolites obtained with Al(NO3)3...
B. W. Lu, H. Jon, T. Kanai, Y. Oumi, K. Itabashi, T. Sano
Journal of Materials Science   41(6) 1861-1864   Mar 2006   [Refereed]
The preparation and characteristic properties of beta zeolite (BEA) with a wide range of Si/Al ratio and an influence of NaOH addition on their thermal stabilities, were analyzed. The highly crystalline BEA was successfully synthesized from the st...
Hery Jon, Baowang Lu, Yasunori Oumi, Keiji Itabashi, Tsuneji Sano, Tsuneji Sano
Microporous and Mesoporous Materials   89(1-3) 88-95   Feb 2006   [Refereed]
Hydrothermal synthesis of beta (BEA) zeolite with NH4F as a fluoride source was investigated in detail. The highly crystalline BEA zeolites with a wide range of Si/Al ratios from 10 to infinity could be easily obtained. From an evaluation of the t...
Y. Oumi, S. Takashima, A. Hanai, H. Nakajima, K. Yamada, S. Hosoda, T. Sano
Studies in Surface Science and Catalysis   158 B 1437-1444   Dec 2005   [Refereed]
Ti-containing mesoporous silicas (Ti-MCM-41, Ti-MCM-48 and Ti-SBA-15) were prepared by the post-synthesis with Ti(OC4H9)4 and their propylene polymerization behavior was investigated. It was found that these Ti-containing mesoporous silicas combin...
T. Ikeda, Y. Oumi, E. Hida, T. Yokoyama, T. Sano, F. Mizukami
Studies in Surface Science and Catalysis   158 A 223-230   Dec 2005   [Refereed]
New high-silica zeolite CDS-1 (Cylindrically Double Saw-Edged zeolite; Framework Type Code (FTC) : CDO) was prepared by dehydration-condensation from novel layered silicate PLS-1 (Pentagonal-cylinder Layered Silicate) intercalating tetramethylammo...
S. Fujita, T. Kanai, Y. Oumi, T. Sano
Studies in Surface Science and Catalysis   158 A 191-198   Dec 2005   [Refereed]
ZSM-5 type zeolites containing alkaline earth metals (M-HZSM-5) were prepared under various synthesis conditions and their hydrothermal stability was investigated. It was found that the average crystal size of M-HZSM-5 can be easily controlled by ...
B. W. Lu, T. Kanai, Y. Oumi, H. Itou, K. Itabashi, T. Sano
Studies in Surface Science and Catalysis   158 A 725-732   Dec 2005   [Refereed]
Influences of various additives on the direct synthesis of high-silica mordenite (MOR) zeolite with tetraethylammonium hydroxide (TEAOH) were studied in detail. The addition of NaF as a fluoride source enhanced the nucleation and crystal growth of...
Shyamal Kumar Saha, Suresh B. Waghmode, Hiroyoshi Maekawa, Kenichi Komura, Yoshihiro Kubota, Yoshihiro Sugi, Yasunori Oumi, Tsuneji Sano
Microporous and Mesoporous Materials   81(1-3) 289-303   Jun 2005   [Refereed]
Metalloaluminophosphate molecular sieves with AFI topology, in which a part of aluminum is substituted isomorphously to alkaline earth metals: Mg, Ca, Sr, and Ba (MAPO-5; M = Mg, Ca, Sr and Ba), were synthesized by hydrothermal synthesis (HTS) met...
Baowang Lu, Yasunori Oumi, Keiji Itabashi, Tsuneji Sano
Microporous and Mesoporous Materials   81(1-3) 365-374   Jun 2005   [Refereed]
Effect of ammonium salts on the direct hydrothermal synthesis of high-silica mordenite (MOR) zeolite with tetraethylammonium hydroxide was investigated. The addition of NH4NO3 to the system restrained the formation of MFI zeolite and quartz, and a...
HIDA Eiji, OUMI Yasunori, IKEDA Takuji, KAWAI Akiko, YOKOYAMA Toshirou, MIZUKAMI Fujio, SANO Tsuneji
Journal of the Ceramic Society of Japan   113(1318) 424-428   Jun 2005   [Refereed]
We have succeeded in the synthesis of a thermostable zeolite with a novel framework structure (CDS-1: Cylindrically Double Saw-edged zeolite; CDO topology) from a novel layered silicate (PLS-1: Pentagonal-cylinder Layered Structure) by topotactic ...
Naonobu Katada, Naonobu Katada, Tatsuya Takeguchi, Tatsuya Suzuki, Toshihisa Fukushima, Kinya Inagaki, Setsuo Tokunaga, Hiromichi Shimada, Koichi Sato, Yasunori Oumi, Tsuneji Sano, Kohichi Segawa, Kazuyuki Nakai, Hiroshi Shoji, Peng Wu, Takashi Tatsumi, Takayuki Komatsu, Takao Masuda, Kazunari Domen, Kazunari Domen, Eisuke Yoda, Eisuke Yoda, Junko N. Kondo, Toshio Okuhara, Yasuyoshi Kageyama, Miki Niwa, Masaru Ogura, Masaru Ogura, Masahiko Matsukata, Eiichi Kikuchi, Noriyasu Okazaki, Motoi Takahashi, Akio Tada, Shogo Tawada, Yoshihiro Kubota, Yoshihiro Sugi, Yasuhiko Higashio, Masahiko Kamada, Yukiyo Kioka, Kohei Yamamoto, Takayuki Shouji, Yusaku Arima, Yasuaki Okamoto, Hideyuki Matsumoto
Applied Catalysis A: General   283(1-2) 63-74   Apr 2005   [Refereed]
A joint study was organized to establish a standard set of conditions for the ion exchange of zeolite from sodium into proton-form. The sodium-form mordenite with Si/Al2 = ca. 15 was ion exchanged into an NH4-form, followed by calcination accordin...
Naonobu Katada, Naonobu Katada, Tatsuya Takeguchi, Tatsuya Suzuki, Toshihisa Fukushima, Kinya Inagaki, Setsuo Tokunaga, Hiromichi Shimada, Koichi Sato, Yasunori Oumi, Tsuneji Sano, Kohichi Segawa, Kazuyuki Nakai, Hiroshi Shoji, Peng Wu, Takashi Tatsumi, Takayuki Komatsu, Takao Masuda, Kazunari Domen, Kazunari Domen, Eisuke Yoda, Eisuke Yoda, Junko N. Kondo, Toshio Okuhara, Takahide Kanai, Takahide Kanai, Miki Niwa, Masaru Ogura, Masaru Ogura, Masahiko Matsukata, Eiichi Kikuchi, Noriyasu Okazaki, Motoi Takahashi, Akio Tada, Shogo Tawada, Yoshihiro Kubota, Yoshihiro Sugi, Yasuhiko Higashio, Masahiko Kamada, Yukiyo Kioka, Kohei Yamamoto, Takayuki Shouji, Shigeo Satokawa, Yusaku Arima, Yasuaki Okamoto, Hideyuki Matsumoto
Applied Catalysis A: General   283(1-2) 75-84   Apr 2005   [Refereed]
The undesired structural change of mordenite with Si/Al2 = 15 during the ion exchange and during calcination from the sodium form into proton form, especially the dealumination after the calcination, was studied. The 29Si NMR results clarified tha...
Y. Oumi, S. Takashima, A. Hanai, H. Nakajima, K. Yamada, S. Hosoda, T. Sano
Studies in Surface Science and Catalysis   158 B 1437-1444   Jan 2005
Ti-containing mesoporous silicas (Ti-MCM-41, Ti-MCM-48 and Ti-SBA-15) were prepared by the post-synthesis with Ti(OC4H9)4and their propylene polymerization behavior was investigated. It was found that these Ti-containing mesoporous silicas combine...

Misc

 
IKEDA Takuji, OUMI Yasunori
Journal of the Vacuum Society of Japan   49(4) 219-224   Jan 2006
Yasunori Oumi, Momoji Kubo, Akira Miyamoto
Kobunshi   48(5) 328-331   Jan 1999
IWAMI Yoshihiro, IKEYA Hitoshi, TATENUMA Rie, UNO Yuka, WANG Zengbao, OUMI Yasunori, SANO Tsuneji
触媒   41(6) 453-455
KUMAR Prashant, OUMI Yasunori, YAMANA Kazuo, SANO Tsuneji
Materials life   14(2) 74-79
OUMI Yasunori
触媒 = Catalyst   44(8) 595-597
YOSHITAKE Hideaki, MIYAJIMA Tomohisa, OUMI Yasunori, SANO Tsuneji
触媒 = Catalysts & Catalysis   49(6) 420-422
IKEDA Takuji, OUMI Yasunori
X-RAYS   47(3) 216-222
We successfully synthesized a novel high-silica zeolite CDS-1 by topotactic conversion from a new three-dimensional layered silicate PLS-1. The crystal structure of PLS-1 was determined from X-ray powder diffraction data. The framework of PLS-1 al...
OUMI Yasunori
Materials life   17(1) 

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(A))
Project Year: 2009 - 2011    Investigator(s): Yasunori OUMI
First, the influence of synthesis condition was investigated for the control of the orientation of layered silicate. It was found that that alcohol is the effective additive for control of shape and size. The crystal size of seed crystal and the c...