文献类型：期刊文献

英文题名：Acidic and Catalytic Properties of Modified Clay for Removing Trace Olefin from Aromatics and Its Industrial Test

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

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

年份：2012

卷号：51

期号：43

起止页码：13891

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20124715676121);WOS:【SCI-EXPANDED(收录号:WOS:000310723800004)】；

语种：英文

外文关键词：Fourier transform infrared spectroscopy - Aromatization - Life cycle - Catalyst deactivation - Zeolites

摘要：The commercial clay modified with zeolite and La2O3 was characterized by thermoprogrammed desorption (t.p.d.) of NH3 and pyridine adsorption followed by Fourier transform infrared spectroscopy (FTIR). The result showed that the weak Lewis acid plays an important role in the alkylation reaction between olefin and aromatics which obeyed the carbonium ion mechanism. The industrial test was conducted in the 450kt/a industrial PX device at Sinopec Zhenhai Company for removing trace olefins from aromatics. It has been proved that the life cycle of the catalyst was 5.3 times that of the commercial clay. The kinetics formula for deactivation rates was explored and the result showed that the rate of clay was much higher than the catalyst deactivation rate.