人工晶体学报2017，Vol.46Issue(11)：2283-2289,7.
酸碱改性ZSM-5分子筛及其噻吩烷基化性能的研究
Study on Thiophene Alkylation Properties of ZSM-5 Zeolite with Acid and Alkali Modification
摘要
Abstract
ZSM-5 zeolites were firstly treated by alkali solution.Then the HZSM-5 molecules of alkali treatment were washed by useing different concentrations of citric acid to prepare the HZSM-5 multiple microporous and mesoporous.The samples were characterized by XRD,SEM,N2 desorption,NH3-TPD and other.It has been investigated that the effect of acid washing after alkaline treatment on the structure and properties of HZSM-5 molecular sieves,It is show that:ZSM-5 molecular sieve catalyst after Alkali treatment are treated by proper concentration citric acid,which can clear the impurities remaining in the molecular sieve channel and expand the pore size of molecular sieve.The initial activity and stability of each catalyst thiophene alkylation before and after modification were studied on a small fixed bed reactor.It is show that through after alkali treatment,and washed with proper concentration of citric acid,the initial activity of the catalyst is lower than the alkali modified zeolite,but it has better stability,and which is more suitable for thiophene alkylation.关键词
ZSM-5分子筛/碱改性/柠檬酸/酸洗/噻吩烷基化Key words
ZSM-5molecular sieve/alkali treatment/citric acid/acid cleaning/thiophene alkyatation分类
化学化工引用本文复制引用
陈文文,王海彦,刘冬梅,毛艳红..酸碱改性ZSM-5分子筛及其噻吩烷基化性能的研究[J].人工晶体学报,2017,46(11):2283-2289,7.基金项目
辽宁省自然基金(2014-525-000-0079) （2014-525-000-0079）
