論文

査読有り
2020年10月1日

Catalytic hydrogenation of levulinic acid in ionic liquid mixtures using hydrogen gas in high-pressure CO<inf>2</inf>

Journal of Supercritical Fluids
  • Haixin Guo
  • ,
  • Shida Tomoka
  • ,
  • Richard Lee Smith

164
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.supflu.2020.104891

© 2020 Elsevier B.V. Hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL) in ionic liquid (IL) mixtures with hydrogen gas in high-pressure CO2 was studied to demonstrate tuning of product selectivity. Ethyl- or butyl- imidazolium-based cation with Cl, acetate [OAc], diethylphosphate, bis(trifluoro-methanesulfonyl)imide or tetrafluoroborate anion IL mixtures were used as the reaction phase with Pd/C, Pd/Al2O3 or Ru/Al2O3 commercial catalysts. Experiments were performed with batch reactors using (1 to 5) MPa partial pressure H2 at nominal pressures of 8 MPa at 110 °C. GVL selectivities as high as 88% at 50% conversion were obtained in [EMIM]Cl-[EMIM][OAc] using 3 MPa partial pressure H2 in presence of CO2 at 4 h reaction time. Specific interactions of LA with Cl anion IL and CO2 with [OAc] anion IL are key to the reaction mechanism. Reaction systems containing Cl anion - [OAc] anion IL mixtures with H2 gas and CO2 have wide application to hydrogenation of biomass-related compounds.

リンク情報
DOI
https://doi.org/10.1016/j.supflu.2020.104891
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85085310579&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85085310579&origin=inward
ID情報
  • DOI : 10.1016/j.supflu.2020.104891
  • ISSN : 0896-8446
  • SCOPUS ID : 85085310579

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