文献类型：期刊文献

英文题名：Insights into Activated Carbon-Supported Platinum Catalysts for Base-Free Oxidation of Glycerol

作者：Lei, Jiaqi[1];Dong, Hua[1];Duan, Xuezhi[1];Chen, Wenyao[1];Qian, Gang[1];Chen, De[2];Zhou, Xinggui[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway

年份：2016

卷号：55

期号：2

起止页码：420

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20160501855639);WOS:【SCI-EXPANDED(收录号:WOS:000368747100003)】；

基金：This work is financially supported by the 111 Project of Ministry of Education of China (B08021), the Fundamental Research Funds for the Central Universities (WA1514013), and the Open Project of State Key Laboratory of Chemical Engineering (SKL-Che-15C03).

语种：英文

外文关键词：Catalyst supports - Glycerol - Catalyst activity - Electronic properties - Oxygen - Catalyst deactivation - Platinum - Oxidation - Impregnation

摘要：Two kinds of activated carbon (AC)-supported Pt catalysts with similar particle sizes were respectively synthesized using the polyol method and incipient wetness impregnation method, and then tested for glycerol oxidation in a base-free condition. It is revealed that the initial reaction rate on the Pt catalyst prepared by the polyol method (Pt/AC(PO)) is nearly triple that on the Pt catalyst prepared by incipient wetness impregnation method (Pt/ACIWI), and the Pt/ACIWI catalyst favors further oxidation of glyceraldehyde to glyceric acid and more CC bond cleavage, which might mainly arise from the difference in relative coverage of oxygen to glycerol caused by the different electronic properties of Pt as well as the difference in the catalyst surface properties. Moreover, the deactivation mechanisms of both catalysts were also investigated. The results show that strongly adsorbed intermediates contribute significantly to the deactivation of the Pt/AC(PO) catalyst, while both the oxygen poison and the adsorption of intermediates on Pt surfaces cause the deactivation of the Pt/AC(IWI) catalyst.