MISC

査読有り
2019年5月

Hydrogen gas-free processes for single-step preparation of transition-metal bifunctional catalysts and one-pot γ-valerolactone synthesis in supercritical CO<inf>2</inf>-ionic liquid systems

Journal of Supercritical Fluids
  • Haixin Guo
  • ,
  • Yuya Hiraga
  • ,
  • Xinhua Qi
  • ,
  • Richard Lee Smith
  • ,
  • Richard Lee Smith

147
開始ページ
263
終了ページ
270
記述言語
英語
掲載種別
DOI
10.1016/j.supflu.2018.11.010

© 2018 Hydrothermal carbonization of glucose (180 °C, 4 h) with 5-sulfosalicylic acid and nickel or copper sulfate afforded transition-metal (Ni/NiO, Cu/CuO) functional carbon (FC) catalysts in a single-step without hydrogen gas. Hydrogenation of levulinic acid to γ-valerolactone (GVL) in supercritical carbon dioxide (scCO2)-ionic liquid ([BMIM]Cl) systems with formic acid as H-donor source and Ni/NiO-FC catalysts gave 97% GVL yields (170 °C, 3 h). The Ni/NiO-FC catalysts (d = 50 to 200 nm) had well-dispersed Ni/NiO particles (&lt;5 nm) with –SO3H, COOH and phenolic −OH functional groups; Ni/NiO-FC catalysts were more effective than Cu/CuO-FC catalysts. Ni/NiO-FC catalysts were active for conversion of substrates (ethyl levulinate, fructose, cellobiose or cellulose) to respective products (GVL, 5-HMF, sugars). The role of scCO2 in the reaction system is one of improving mass transport and suppressing side-reactions via GVL product removal. Proposed methods for catalyst synthesis and substrate hydrogenation do not require hydrogen gas and are widely applicable to processing biomass.

Web of Science ® 被引用回数 : 9

リンク情報
DOI
https://doi.org/10.1016/j.supflu.2018.11.010
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000462690700029&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056810079&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85056810079&origin=inward
ID情報
  • DOI : 10.1016/j.supflu.2018.11.010
  • ISSN : 0896-8446
  • eISSN : 1872-8162
  • SCOPUS ID : 85056810079
  • Web of Science ID : WOS:000462690700029

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