石油化工2017，Vol.46Issue(3)：276-282,7.DOI:10.3969/j.issn.1000-8144.2017.03.002
分级孔ZSM-5分子筛催化甲醇转化制烃类的稳定性
Stability of ZSM-5 zeolite catalysts with hierarchical pores for methanol to hydrocarbons
摘要
Abstract
A normal ZSM-5 zeolite and three ZSM-5 zeolites with hierarchical pores were synthesized by hydro-thermal method,and characterized by means of XRD,N2 adsorptiondesorption,SEM,NH3-TPD and Py-IR to get the information about their crystal structure,pore structure,morphology and acidity.The performances of the ZSM-5 zeolite catalysts in methanol to hydrocarbons were investigated in a continuous flow fixed bed reactor.It was showed that the acidity and pore structure of the ZSM-5 zeolites had important effects on their stability in the catalytic reactions.The well-distributed nano crystal grains of the ZSM-5 zeolites formed secondary mesopores and macropores,and these pores and their inherent micropore constructed hierarchical pore structure with larger pore volume(up to 0.49 cm3/g),which could improve the diffusion property of the zeolite catalysts and greatly enhanced their resistance to carbon deposition.So the catalyst life was prolonged from 24 h to 336 h.关键词
ZSM-5分子筛催化剂/分级孔道/甲醇/烃/积碳Key words
ZSM-5 zeolite catalyst/hierarchical pore/methanol/hydrocarbon/carbon deposition分类
化学化工引用本文复制引用
高俊华,刘平,章斌,刘增厚,韩丽华,张侃..分级孔ZSM-5分子筛催化甲醇转化制烃类的稳定性[J].石油化工,2017,46(3):276-282,7.基金项目
中国科学院战略性先导专项资助项目(XDA-07070400). （XDA-07070400）
