石油化工2025，Vol.54Issue(4)：451-458,8.DOI:10.3969/j.issn.1000-8144.2025.04.001
低负载量Zn改性HZSM-5催化甲醇芳构化
Methanol aromatization catalyzed by low-load Zn-modified HZSM-5
摘要
Abstract
To fully utilize ZnOH+species and ensure suitable acidity,low-concentration Zn(NO3)2 solution was used to modify HZSM-5 and a methanol aromatization catalyst was gained.XRD,FTIR,N2adsorption-desorption,XPS,NH3-TPD,Py-FTIR,and TG-DTG were employed to investigate effects of low-load Zn(0.1％-0.5％(w))on performance of the catalyst.The results indicate that the modified catalyst retains its MFI structure with no significant changes in pore type.Compared with the high-load(＞0.5％(w)),when the load is low,the interaction between Zn and framework Al is stronger.The decline extent of strong acids and B acids is smaller,B acid to L acid ratio is higher,the average carbon deposition rate of catalyst is lower,and the lifespan of catalyst is longer.Among the low loadings,Zn0.2-HZ5 exhibits a stronger interaction between Zn and framework Al with more excellent catalytic activity.关键词
HZSM-5分子筛/Zn改性/低负载量/甲醇芳构化Key words
HZSM-5 molecular sieve/Zn modification/low-load/methanol aromatization分类
化学工程引用本文复制引用
杨丽娜,项洋,刘金宝,李剑..低负载量Zn改性HZSM-5催化甲醇芳构化[J].石油化工,2025,54(4):451-458,8.基金项目
辽宁省高等学校杰出青年学者成长计划(LJQ2015062) （LJQ2015062）
辽宁省科学技术厅项目(20170540585) （20170540585）
辽宁省教育厅项目(L2015296,L2016018). （L2015296,L2016018）
