期刊
APPLIED CATALYSIS A-GENERAL
卷 470, 期 -, 页码 215-220出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2013.10.059
关键词
Liquid phase hydrogenation; Supported ruthenium catalyst; gamma-Valerolactone; Graphite support
资金
- Special Coordination Funds for Promoting Science and Technology Development of Sustainable Catalytic Reaction System using Carbon Dioxide and Water
Liquid-phase hydrogenation of methyl levulinate was studied over graphite-supported ruthenium (Ru/graphite), zeolite-supported ruthenium, and a mixture of Ru/graphite and zeolites in water at 343 K. The final gamma-valerolactone yield over the mixture of Ru/graphite and ZSM-5 showed the highest activities between Ru/graphite, Ru/ZSM-5, and the mixture of Ru/graphite and several zeolites. Methyl levulinate was hydrogenated to methyl 4-hydroxyvalerate or directly to gamma-valerolactone over supported ruthenium metal sites and methyl 4-hydroxyvalerate was converted to gamma-valerolactone over acid sites. The mixture of Ru/graphite and ZSM-5 contained both highly dispersed ruthenium metal particles and a number of acid sites rather than those over zeolite-supported ruthenium catalysts, which led to the highest gamma-valerolactone yield. (C) 2013 Elsevier B.V. All rights reserved.
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