文献类型：期刊文献

英文题名：Engineering gold impregnated uncalcined TS-1 to boost catalytic formation of propylene oxide

作者：Zhang, Zhihua[1];Tang, Yanqiang[1];Du, Wei[1];Xu, Jialun[1];Wang, Qianhong[1];Song, Nan[1];Qian, Gang[1];Duan, Xuezhi[1];Zhou, Xinggui[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：319

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20223712703896);WOS:【SCI-EXPANDED(收录号:WOS:000861041200002)】；

基金：This work was supported by Ministry of Science and Technology of the People's Republic of China, under the Research Fund for National Key R & D Program of China (2021YFA1501403) , the Natural Science Foundation of China (22038003, 21922803, 22178100) , the Innovation Program of the Shanghai Municipal Education Commission, the Program of Shanghai Academic/Technology Research Leader (21XD1421000) and the Shanghai Science and Technology Innovation Action Plan (22JC1403800) .

语种：英文

外文关键词：Propylene epoxidation; Gold catalyst; Impregnation method; Sulphur promoter

摘要：Design and fabrication of highly efficient Au-based catalysts using simple impregnation method have been long sought-after. Herein, we report an efficient strategy to impregnate Au species onto uncalcined TS-1 using a sulphur-containing gold precursor, i.e., sodium dithiosulfatoaurate, for propylene epoxidation with H-2 and O-2 to produce propylene oxide (PO). Such catalyst delivers superior activity than the referenced catalyst prepared by impregnation using (sodium) aurichloride precursor and the catalyst prepared by deposition-precipitant urea (DPU) method. The catalyst structure-performance relationship is established by using multiple microscopy and spectroscopy techniques. The sulphur species contained in the Au precursor can serve as protecting-ligands, thus facilitating the formation of highly dispersed Au species on uncalcined TS-1. This finding may also provide a way for the preparation of highly efficient impregnated Au-based catalysts for other reactions.