期刊
RSC ADVANCES
卷 8, 期 17, 页码 9152-9160出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra01316k
关键词
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资金
- National Natural Science Foundation of China [21403269, 21603254]
- Natural Science Foundation of Shanxi Province [2016021033]
- Science Foundation for Youth Scholars of State Key Laboratory of Coal Conversion [2016BWZ002]
- Youth Innovation Promotion Association CAS [2015140]
- CAS/SAFEA International Partnership Program for Creative Research Teams [2015YC901]
A highly active and selective cobalt catalyst was developed for the hydrogenation of biomass-derived ethyl levulinate (EL) to gamma-valerolactone (GVL), ethyl 4-hydroxypentanoate (EHP), 1,4-pentanediol (1,4-PDO) and 2-methyltetrahydrofuran (2-MTHF), which are considered to be value-added chemicals and important biofuels. The effects of reaction time, reaction temperature, catalyst amount and solvent on its catalytic performance were investigated. In addition, the reaction pathway was studied as well. It was found that the selectivity of GVL, 1,4-PDO and 2-MTHF on Co/ZrO2 can be easily tuned by changing reaction conditions, and can reach as high as 94%, 78% and 77%, respectively. The product selectivity is also significantly affected by the catalyst support. With SBA-15 as the support, the selectivity of EHP can reach 90%. Moreover, Co/ZrO2 gave an extraordinarily high GVL productivity of 1.50 mol g(metal)(-1 )h(-1) and displayed excellent stability and reusability. Interestingly, coke has a positive effect on the enhancement of GVL yield. AL dimers and trimers were identified as the coke species in the hydrogenation of EL. As far as we know, this is the first work conducting the flexible transformation of EL on cobalt catalysts.
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