日用化学工业2017，Vol.47Issue(7)：379-383,5.DOI:10.13218/j.cnki.csdc.2017.07.005
利用双头季铵盐合成特殊形貌的EU-1分子筛及其催化性能
Synthesis of EU - 1 zeolites with special morphology using double - headed quaternary ammonium salt and their catalytic performance
摘要
Abstract
Using double-headed quaternary ammonium salt C18-6-6 Br2 as the assistant template,the EU-1 zeolites with special morphology were synthesized with hydrothermal method and vapor phase method.The product samples were characterized by XRD,SEM,NH 3-TPD and N2 adsorption-desorption.Besides,xylene isomerization was used as the probe reaction to evaluate their catalytic performance.Results show that the addition of the double-headed quaternary ammonium salt C18-6-6 Br2 can effectively change the morphology of the product,especially in the case of vapor phase method.The morphology of EU-1 zeolite synthesized by adding C18-6-6 Br2 in the steam phase shows honeycomb,and both its strong acid content and weak acid content decrease.The total specific surface area and the total pore volume increases by 83.65% and 126.72%respectively.The yield of xylene (PX),the selectivity (Y(C8))and the catalytic activity ([PX]/ ΣX) significantly increases by 8.94%,6.44% and 6.01% respectively in the xylene isomerization reaction.关键词
双头季铵盐/EU-1分子筛/水热法/蒸汽相法/二甲苯异构化Key words
double-headed quaternary ammonium salt/EU-1 zeolites/hydrothermal method/vapor phase method/xylene isomerization分类
化学化工引用本文复制引用
高李霞,李晓峰,高萌,刘晓臻,李国栋,窦涛..利用双头季铵盐合成特殊形貌的EU-1分子筛及其催化性能[J].日用化学工业,2017,47(7):379-383,5.基金项目
国家科技型中小企业技术创新项目(14C26211400552) （14C26211400552）
