期刊
RSC ADVANCES
卷 3, 期 26, 页码 10277-10284出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra41288a
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资金
- National Basic Research Program of China [2010CB732201]
- National Natural Science Foundation of China [21106121]
- Provincial R&D Program from Economic and Trade Committee of Fujian Province of China [1270-K42004]
- Fundamental Research Funds for the Central Universities [2010121077]
- Fundamental Research Funds for the Xiamen University [201212G006]
A green and efficient process was developed for the conversion of biomass-derived ethyl levulinate (EL) into gamma-valerolactone (GVL) using supercritical ethanol as the hydrogen donor and the reaction medium over low-cost and eco-friendly ZrO2 catalysts, which were prepared by the precipitation method and characterized by BET, SEM, XRD, FT-IR, TGA-DTA, TPD-NH3 and TPD-CO2. The results indicated that amorphous ZrO2 with a high specific surface area and a large number of acid-base sites exhibited the highest catalytic activity, an excellent GVL yield of 81.5% with 95.5% EL conversion was achieved at 523 K over 3 h. In addition, combined with the results of poisoning experiments, a plausible mechanism of catalytic transfer hydrogenation (CTH) via a six-membered ring transition state was also presented.
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