太原理工大学学报2018，Vol.49Issue(2)：204-210,7.DOI:10.16355/j.cnki.issn1007-9432tyut.2018.02.005
蒸汽相法辅助碳模板合成介孔EU-1分子筛
Synthesis of Hierarchical EU-1 Zeolite Using Carbon Templating with Vapor Phase Assisting Method
摘要
Abstract
The synthetic gel was prepared by mixing sucrose,silicon and aluminum,and then partially carbonized at 170 ℃ in air(MI)or carbonized at 400 ℃ in oxygen-free environment (MII)to obtain carbon-silicon-aluminum compound.The vapor phase method was adopted to synthesize hierarchical EU-1 zeolite.The research results showed that MI and MII can effectively improve the surface area and the pore volume of mesopores.When the m(sucrose)/m(SiO2)was a fixed value,the mesoporous capacity of MII was better than that of MI.The synthetic samples by MI and MII maintain a consistent rule:with m(sucrose)/m(SiO2)increasing,the crystallinity of the samples decreases gradually;the surface area and pore volume increase little by little;the amount of weak acid and strong acid decreases obviously.The hierarchical EU-1 zeolite is favora-ble for the diffusion and improved catalytic performance for xylene isomerization,with the cata-lytic activity increasing from 22.99% to 23.92%,C8 aromatic hydrocarbon selectivity increasing from 89.52% to 91.12%.关键词
EU-1分子筛/蔗糖/碳模板/多级孔/二甲苯异构化/催化Key words
EU-1 zeolite/sucrose/carbon template/hierarchical/xylene isomerization/catalytic分类
化学化工引用本文复制引用
高萌,刘晓臻,高李霞,李国栋,吕志平,窦涛..蒸汽相法辅助碳模板合成介孔EU-1分子筛[J].太原理工大学学报,2018,49(2):204-210,7.基金项目
国家自然科学基金资助项目(20973123) （20973123）
国家科技型中小企业技术创新资助项目(14C26211400552) （14C26211400552）
