期刊
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
卷 87, 期 -, 页码 131-139出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2018.03.023
关键词
Glycerol; Diethyl carbonate; Glycerol carbonate; CeO2-CdO
资金
- National Natural Science Foundation of china [21276050, 21676054, 21406034]
- Natural Science foundation of Jiangsu [BK20161415]
- Fundamental Research Funds for the central Universities [3207045414, 3207045101, 3207045426]
- Key Laboratory Open Fund of Jiangsu Province [JSBEM201409]
A series of Ce1-xCdxO mixed oxide catalysts prepared by co-precipitation method were tested for synthesis of glycerol carbonate (GC) from glycerol and diethyl carbonate (DEC). The microstructural and physicochemical properties of the bimetal catalysts were characterized by XRD, SEM, TEM, XPS, CO2-TPD, N-2-adsorption, TG-DSC and H-1 NMR. The results show that the spherical particles of CdO were uniformly dispersed on the surface of lamellar CeO2. Besides, a noticeable increase was observed in the moderate basic sites concentration, because more oxygen atoms were adsorbed on the bimetal sample surface which was attributed to Ce4+ doped into CdO lattice. The Ce0.7Cd0.3O sample annealed at 500 degrees C was observed with the highest catalytic activity. 96.84% of glycerol conversion and 100% selectivity to GC were obtained over this catalyst under the optimized conditions (5 wt.% catalyst of glycerol, 90 degrees C, 180 min, glycerol/DEC molar ratio of 1:3). Besides, it was found that the conversion of glycerol carbonate was synergistically accelerated by the moderate and strong basic sites. (C) 2018 Taiwan institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据