西安石油大学学报（自然科学版）2024，Vol.39Issue(5)：109-115,126,8.DOI:10.3969/j.issn.1673-064X.2024.05.014
改性纳米ZSM-5分子筛催化甲醇制对二甲苯的反应性能
Study on Catalytic Performance of Methanol to p-Xylene over Modified Nano-sized ZSM-5 Zeolites
摘要
Abstract
Nano ZSM-5 zeolites was synthesized by hydrothermal synthesis method,and the compositely modified nano ZSM-5zeolites by ZnO,MgO,and P2 O5 was prepared by equal volume impregnation method,which was used to catalyze the highly selective reaction of preparing p-xylene using methanol.The synthesized modified nano-sized ZSM-5 zeolites was characterized by XRD,SEM,N2 adsorption-desorption and NH3-TPD.Furthermore,the catalytic performance of different ZSM-5 zeolites for using methanol to prepare p-xylene was investigated.The results indicated that,nano-sized samples exhibited higher aromatic selectivity than micro-sized ZSM-5,owing to the more inter-mesopores.The introduction of Zn could increase the medium acid sites,which enhanced the aromatic production.The modi-fication of Mg and P could optimise both the acidic properties and shape selectivity,which is beneficial to the formation of p-xylene.The modified nano-sized ZSM-5 zeolite gave the p-xylene selectivity of 23.3％,with the para-selectivity of 81.1％.关键词
纳米ZSM-5分子筛/复合改性/对二甲苯/甲醇/择形性Key words
nano-sized ZSM-5 zeolites/composite modification/p-xylene/methanol/shape selectivity分类
能源科技引用本文复制引用
张娇玉,朱生华,唐瑞源,郑延成,李克华..改性纳米ZSM-5分子筛催化甲醇制对二甲苯的反应性能[J].西安石油大学学报（自然科学版）,2024,39(5):109-115,126,8.基金项目
重质油国家重点实验室开放课题项目(SKLOP201901001) （SKLOP201901001）
湖北省教育厅指导性项目(B2020040)和省部共建煤炭高效利用与绿色化工国家重点实验室开放课题(2021-K44) （B2020040）
