摘要
通过液相沉积法将无水AlCl3负载到HY沸石上制得负载型催化剂。研究了负载前后HY沸石催化β-甲基萘(β-MN)与均四甲苯(TMB)转移烷基化反应性能。结果表明,随着负载型HY沸石的表面酸性增强,沸石的孔径减小,催化β-MN与TMB转移烷摹化反应的活性提高,2,6-／2,7-二甲基萘(DMN)的选择性得到改善。当反应在β-MN与TMB摩尔比为1:1,反应温度为400℃,空速为6.0 h-1的条件下进行时,β-MN的转化率为46.4％,2,6-DMN／2,7-DMN的选择性为25.6％。
AlCl3 was successfully immobilized on HY zeolite to form a new selective catalyst by the liquid chemical deposit.The transalkylation ofβ-methylnaphthalen (β-MN) with 1 ,2,4,5-tetramethylbenzene(TMB) over HY and AlCl3 immobilized HY zeolite was studied. The results show that the transalkylation activity and the selectivity in the production of 2,6-/2,7-DMN increase with the increasing of the surface acidity and decreasing of the pore size of AlCl3 immobilized HY zeolite. The conversion of β-MN could reach to 46.4% , and the selectivity for 2,6-/2,7-DMN can reach up to 25.6% on the optimized condition of the reaction temperature at 400℃,with 6 h-1 of WHSV(weight hourly space velocity) ,and with 1:1 of β-MN/TMB mol ratio.
出处
《现代化工》
CAS
CSCD
北大核心
2004年第12期30-32,共3页
Modern Chemical Industry
基金
黑龙江省自然基金项目(B0301)黑龙江省科学技术计划项目(GC02A309)
关键词
HY沸石
择型催化
Β-甲基萘
二甲基萘
转移烷基化
HY zeolite
shape selective catalysis
β-methylnaphthalene
dimethylnaphthalene
transalkylation
