文献类型：期刊文献

中文题名：Purification of Aromatics over a Promising SO_4^(2-)/ZrO_2 Catalyst

英文题名：Purification of Aromatics over a Promising SO42-/ZrO2 Catalyst

作者：Zhao Qing[1];Liu Jianfei[1];Yao Jiajia[1];Shi Li[1];Wang Xin[1]

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

年份：2016

卷号：18

期号：3

起止页码：49

中文期刊名：China Petroleum Processing & Petrochemical Technology

外文期刊名：CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY

收录：;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000386598400007)】；

语种：英文

中文关键词：aromatics;sulfated;zirconia;purification;olefin;conversion;catalyst

外文关键词：aromatics; sulfated zirconia; purification; olefin conversion; catalyst

摘要：A promising sulfated zirconia(SZ) was successfully synthesized to remove olefins from aromatics. The effects of type and quantity of precipitant, the concentration of impregnants and the calcination temperature were studied, and the synthesized samples were characterized by XRD, SEM, TG-DTG, FTIR, N_2 adsorption analysis and the FTIR pyridine adsorption(py-IR) techniques. This catalyst was found to be superiorly active as compared with the commercial ROC, which exhibited promising application prospects in industry. The optimum synthesis variables required that SZ was impregnated with 2.0 mol/L sulfuric acid and calcined at 650 ℃, and the precursor was precipitated by ammonium hydroxide to reach eventually a p H value of over 9.46. The addition of SO_4^(2-) species increased the amount of catalytically active t-ZrO_2, which was helpful to an increasing abundance of acid sites for enhancing the activity. Meanwhile, the calcination temperature had a great effect on the structure, composition and properties of sulfated zirconia.
A promising sulfated zirconia (SZ) was successfully synthesized to remove olefins from aromatics. The effects of type and quantity of precipitant, the concentration of impregnants and the calcination temperature were studied, and the synthesized samples were characterized by XRD, SEM, TG-DTG, FTIR, N-2 adsorption analysis and the FTIR pyridine adsorption (py-IR) techniques. This catalyst was found to be superiorly active as compared with the commercial ROC, which exhibited promising application prospects in industry. The optimum synthesis variables required that SZ was impregnated with 2.0 mol/L sulfuric acid and calcined at 650 degrees C, and the precursor was precipitated by ammonium hydroxide to reach eventually a pH value of over 9.46. The addition of SO42- species increased the amount of catalytically active t-ZrO2, which was helpful to an increasing abundance of acid sites for enhancing the activity. Meanwhile, the calcination temperature had a great effect on the structure, composition and properties of sulfated zirconia.