期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 35, 期 -, 页码 262-267出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.01.002
关键词
Submerged catalysis/membrane filtration system; Glycerol hydrogenolysis; 1,2-Propanediol; Cu-ZnO catalyst; Catalyst deactivation
资金
- Jiangsu Natural Science Foundation for Distinguished Young Scholars [BK20150044]
- Natural Science Foundation of Jiangsu Province [BK20130920]
- National Natural Science Foundation of China [91534110, 21306081]
- he Foundation from State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201402, ZK201407]
- Technology Innovation Foundation for Science and Technology Enterprises in Jiangsu Province of China [BC2015008]
The deactivation mechanism of Cu-ZnO catalyst was investigated in detail. During the glycerol hydrogenolysis cycles, the morphology of Cu-ZnO catalyst was firstly changed from spherical nanoparticles to lamellar structure and then to rod-like structure, and the uniform surface composition was deteriorated. The obvious aggregation of Cu and ZnO crystallite sites led to the decrease in specific surface area and pore volume. Furthermore, the Cu content on the catalyst surface significantly decreased with the increase of the number of reaction cycle. These findings provide in-depth insights on the deactivation of Cu-ZnO catalyst and the obvious decrease in glycerol conversion. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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