TAKAHASHI Ryoji

J-GLOBAL         Last updated: Jan 6, 2019 at 15:51
 
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Name
TAKAHASHI Ryoji
URL
http://chem.sci.ehime-u.ac.jp/~inorg1/
Affiliation
Ehime University
Section
Graduate School of Science and EngineeringChemistry and Biology
Job title
Professor

Research Areas

 
 

Education

 
 
 - 
1993
Graduate School, Division of Engineering, Kyoto University
 
 
 - 
1996
Graduate School, Division of Engineering, Kyoto University
 
 
 - 
1991
Faculty of Engineering, Kyoto University
 

Published Papers

 
Ikuya Yamada, Ikuya Yamada, Kentaro Shiro, Naoaki Hayashi, Shogo Kawaguchi, Takateru Kawakami, Ryoji Takahashi, Tetsuo Irifune
Journal of Asian Ceramic Societies   5 169-175   Jun 2017   [Refereed]
© 2017 The Ceramic Society of Japan and the Korean Ceramic Society Crystal structures and electronic transformations of quadruple iron perovskite solid solution Ca 1−x Sr x Cu 3 Fe 4 O 12 (x = 0.2, 0.4, 0.6, and 0.8) have been investigated by syn...
Sato Fumiya, Shiokai Hitoshi, Yano Yusuke, Sugiura Masatoshi, Takahashi Ryoji
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   125(10) 737-741   2017   [Refereed]
Takahashi Ryoji, Onishi Akiko, Sato Fumiya, Kuramoto Makoto
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN   125(10) 742-746   2017   [Refereed]
Masaki Saito, Tamotsu Zako, Ryoji Takahashi, Youji Shimazaki
Chemistry Letters   45 1241-1243   Jan 2016   [Refereed]
© 2016 The Chemical Society of Japan. In this study, we firstly report inhibition of amyloid β 42 (Aβ 42 ) fibrillation, which is related to the progression of Alzheimer's disease, by digestion using proteases, combined with Aβ 42 isolation usin...
Ikuya Yamada, Ikuya Yamada, Ikuya Yamada, Hidenobu Etani, Makoto Murakami, Naoaki Hayashi, Takateru Kawakami, Masaichiro Mizumaki, Masaichiro Mizumaki, Shigenori Ueda, Hideki Abe, Hideki Abe, Klaus Dieter Liss, Andrew J. Studer, Tomoatsu Ozaki, Shigeo Mori, Ryoji Takahashi, Tetsuo Irifune
Inorganic Chemistry   53 11794-11801   Nov 2014   [Refereed]
© 2014 American Chemical Society. A novel quadruple perovskite oxide CeCu 3 Fe 4 O 12 has been synthesized under high-pressure and higherature conditions of 15 GPa and 1473 K. 57 Fe Mössbauer spectroscopy displays a charge disproportionation tra...
Ikuya Yamada, Ikuya Yamada, Mikiko Ochi, Masaichiro Mizumaki, Masaichiro Mizumaki, Atsushi Hariki, Takayuki Uozumi, Ryoji Takahashi, Tetsuo Irifune
Inorganic Chemistry   53 7089-7091   Jul 2014   [Refereed]
A novel perovskite oxide, CaCu 3 Rh 4 O 12 , has been synthesized under high-pressure and high-temperature conditions (15 GPa and 1273 K). Rietveld refinement of synchrotron X-ray powder diffraction data indicates that this compound crystallizes i...
Ikuya Yamada, Ikuya Yamada, Ikuya Yamada, Hidenobu Etani, Kazuki Tsuchida, Shohei Marukawa, Naoaki Hayashi, Takateru Kawakami, Masaichiro Mizumaki, Masaichiro Mizumaki, Kenya Ohgushi, Yoshihiro Kusano, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Norimasa Nishiyama, Norimasa Nishiyama, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Mikio Takano
Inorganic Chemistry   52 13751-13761   Dec 2013   [Refereed]
Unusual electronic phase transitions in the A-site ordered perovskites LnCu 3 Fe 4 O 12 (Ln: trivalent lanthanide ion) are investigated. All LnCu 3 Fe 4 O 12 compounds are in identical valence states of Ln 3+ Cu 2+ 3 Fe 3.75+ 4 O 12 at high temper...
Yu Kawasaki, Syota Takase, Syota Takase, Yutaka Kishimoto, Takashi Ohno, Ikuya Yamada, Kentaro Shiro, Ryoji Takahashi, Kenya Ohgushi, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune
Journal of the Korean Physical Society   63 640-643   Aug 2013   [Refereed]
We have investigated the successive magnetic phase transitions of the A-site ordered perovskite LaMn 3 Cr 4 O 12 by measuring 139 La nuclear magnetic resonance (NMR) spectra. The successive magnetic transitions are revealed by a very small but c...
Hidenobu Etani, Ikuya Yamada, Ikuya Yamada, Ikuya Yamada, Kenya Ohgushi, Naoaki Hayashi, Yoshihiro Kusano, Masaichiro Mizumaki, Masaichiro Mizumaki, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Norimasa Nishiyama, Norimasa Nishiyama, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Mikio Takano
Journal of the American Chemical Society   135 6100-6106   Apr 2013   [Refereed]
A novel iron perovskite YCu 3 Fe 4 O 12 was synthesized under high pressure and high temperature of 15 GPa and 1273 K. Synchrotron X-ray and electron diffraction measurements have demonstrated that this compound crystallizes in the cubic AA′ 3 B 4...
Toshiaki Abe, Shouhei Anan, Fumiya Watanabe, Ryoji Takahashi, Yoshifumi Ikoma
Materials Science Forum   750 244-247   Apr 2013   [Refereed]
Au-catalyzed growth of nanocrystalline Si by pulse jet chemical vapor deposition hasbeen investigated. Au thin film was first deposited on thermally oxidized Si(100), then CH 3 SiH 3 pulse jets were irradiated onto the Au/SiO 2 /Si(100) surface. T...

Conference Activities & Talks

 
Acid properties and alkali resistance of porous silica-zirconia with controlled local structure
Genki TANAKA, Ryoji TAKAHASHI, Fumiya SATO
The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)   6 Aug 2018   
Investigation of active species on lanthanum catalysts in the ketonization of carboxylic acid
Fumiya SATO, Ryoji TAKAHASHI
The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)   6 Aug 2018   
Pore size control of silica-templated activated carbon
○松井智也、高橋亮治、佐藤文哉
触媒学会西日本支部第6回触媒科学研究発表会   12 Jun 2015   触媒学会(西日本支部)
Effect of ZrO2 addition in SiO2 on stability and acidic properties
○山田賢一郎、高橋亮治、佐藤文哉
触媒学会西日本支部第6回触媒科学研究発表会   12 Jun 2015   触媒学会(西日本支部)
Synthesis and crystal growth of Al rich Cu-Al based layered double hydroxides using sol-gel method
○小玉修身、佐藤文哉、高橋亮治
触媒学会西日本支部第6回触媒科学研究発表会   12 Jun 2015   触媒学会(西日本支部)