文献类型：期刊文献

英文题名：Acid properties and catalysis of USY zeolite with different extra-framework aluminum concentration

作者：Pu, Xin[1];Liu, Nai-wang[1];Shi, Li[1]

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

年份：2015

卷号：201

期号：C

起止页码：17

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20151400715056);WOS:【SCI-EXPANDED(收录号:WOS:000345185200003)】；

基金：The authors gratefully acknowledge the financial support by the Sinopec Zhenhai Refining and Chemical Company through the applied research program.

语种：英文

外文关键词：USY; Acid property; Dealumination; X-ray diffraction; Extra framework aluminum

摘要：USY zeolite was treated by the citric acid. The properties and catalysis of the USY zeolite were studied. The X-ray diffraction has been used to identify and quantify extra framework aluminum (EFAL) in USY zeolite by EFAL extraction using citric acid. The acid character changed depending on the EFAL concentration. The Lewis acid sites can be obtained from the Si/Al ratio. The removing of trace olefins was carried out over kinds USY zeolites with different amount of EFAL. The catalytic performance was correlated with the Lewis acid sites of USY. (C) 2014 Elsevier Inc. All rights reserved.