文献类型：期刊文献

英文题名：Hydrotreating of waste cooking oil over supported CoMoS catalyst Catalyst - deactivation mechanism study

作者：Wang, Hui[1];Li, Guoliang[1,4];Rogers, Kyle[1];Lin, Hongfei[1];Zheng, Ying[1,2];Ng, Siauw[3]

机构：[1]Univ New Brunswick, Dept Chem Engn, 15 Dineen Dr, Fredericton, NB E3B 5A3, Canada;[2]Univ Edinburgh, Sch Engn, Colin Maclaurin Rd, Edinburgh EH9 3DW, Midlothian, Scotland;[3]Canmet ENERGY Devon, Natl Ctr Upgrading Technol, 1 Oil Patch Dr, Edmonton, AB T9G 1A8, Canada;[4]East China Univ Sci & Technol, Sch Chem Engn, Petr Proc Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：443

起止页码：228

外文期刊名：MOLECULAR CATALYSIS

收录：;EI(收录号：20174604397684);WOS:【SCI-EXPANDED(收录号:WOS:000416616000027)】；

基金：The authors gratefully thank the Natural Sciences and Engineering Research Council of Canada (NSERC strategic: 4631402014-STPGP, NSERC DISCOVERY: RGPIN-2015-03869), the Canada Foundation for Innovation (#31983), and Canada Research Chairs program (950-228053) for financial assistance. Special thanks are for XPS testing due to Dr. Ken Wong from Advanced Materials and Process Engineering Laboratory at The University of British Columbia.

语种：英文

外文关键词：Deactivation mechanism; Supported CoMoS catalyst; Triglycerides hydrotreating; Hydrodeoxygenation; Waste cooking oil

摘要：The hydrotreating of waste cooking oil (WCO) to produce fuels not only solves waste problem but also recycles energy. CoMoS is regarded as an effective catalyst for the deoxygenation of triglyceride during the hydrotreating process; however, it is easy to deactivate. This article studied the deactivation mechanism of a supported CoMoS commercial catalyst during the hydrotreating of WCO. It was the first time to find triglyceride deoxygenation over different active sites during CoMoS catalyst deactivating process: saturated hydrocarbons were the primary products over MoS2 on the presulfided CoMoS catalyst, and unsaturated hydrocarbons were produced over MoO3 on the spent CoMoS catalyst as the transformation of the MoS2 into MoO3 occurred under high temperature operation. Three causes were observed for the deactivation of the studied catalyst: by-product water, loss of sulfur, and coke deposition. Low temperature operation at 275 degrees C can control the deactivation of CoMoS catalyst due to coke deposition. In-situ drying and resulfiding the spent catalyst were proposed as methods to regenerate the spent catalyst. (C) 2017 Published by Elsevier B.V.