文献类型：期刊文献

英文题名：Effect of dealumination of HZSM-5 by acid treatment on catalytic properties in non-hydrocracking of diesel

作者：Meng, Xuan[1];Lian, Zhentao[1];Wang, Xin[1];Shi, Li[1];Liu, Naiwang[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：270

外文期刊名：FUEL

收录：;EI(收录号：20201008262022);WOS:【SCI-EXPANDED(收录号:WOS:000520029100015)】；

基金：This project was financially supported by the National Science Foundation for Young Scientists of China (No. 21706065) and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-18C02).

语种：英文

外文关键词：Acid treatment; Hierarchical pore; Non-hydrocracking; HZSM-5 zeolite

摘要：A series of modified HZSM-5 zeolites with different types of acid and different HCl concentrations treatments were synthesized, respectively. The crystal morphology, textural property and acidic property of the catalysts were characterized by XRD, N-2 adsorption-desorption, NH3-TPD, Py-IR and Al-27 MAS NMR spectroscopy. The influences of acid treated types and acid solution concentrations in the pore structure, acidity and non-hydrocracking activity were investigated. The results showed that mesopores were successfully induced to HZSM-5 zeolites after dealumination by HCl and H3PO4 treatment and the acid sites were redistributed. The acidic analysis revealed that the increase of LAS/BAS value was conducive to improving the non-hydrocracking cracking activity and gasoline yield of the samples. It was also observed that an appropriate amount of HC1 treatment can not only play the role of dredge the channel of the zeolites, also introduce some new mesoporous. The hydrochloric acid treated sample (HZ-1.0HA) showed the best diesel non-hydrocracking cracking activity and gasoline yield.