燃料化学学报2016，Vol.44Issue(8)：1010-1016,7.
ZSM-22分子筛的合成、表征及烷基化性能研究
Synthesis and characterization of ZSM-22 zeolites and their catalytic performance in alkylation reaction
王宏浩 1刘粟侥 2张怀科 3郭大光 2马骏 4任杰 1王海彦1
作者信息
- 1. 辽宁石油化工大学 化学化工与环境学部，辽宁 抚顺 113001
- 2. 中国科学院山西煤炭化学研究所 煤间接液化国家工程实验室，山西 太原 030001
- 3. 中国科学院大学，北京 100049
- 4. 中科合成油技术有限公司，北京 101407
- 折叠
摘要
Abstract
The ZSM-22 molecular sieves with various morphologies were synthesized by different methods. XRD, SEM, BET, MAS NMR, NH3-TPD and Py-FTIR were used to study the structure, morphology, surface area, Si-Al coordination and acidity of the samples. Furthermore, the toluene-methanol alkylation as probe reaction was used to investigate the effect of ZSM-22 zeolites morphology on catalytic performance. The lattice parameters, surface areas, Si-Al coordination and acidity of all samples are obviously different. As a result, the interaction of each bundle of the bundle-like ZSM-22 zeolites leads to the structure change of Si ( 4 Si ) coordination, the increase of T3 and T4 with decrease of T2 location, and thus displays more L acid sites. At 380 ℃ reaction temperature, the bundle-like ZSM-22 zeolite catalyst shows high selectivity to p-xylene (76. 1%) at about 16. 7% conversion in the toluene-methanol alkylation.关键词
ZSM-22分子筛/晶体形貌/甲苯-甲醇烷基化Key words
ZSM-22 molecular sieve/morphology/toluene-methanol alkylation分类
化学引用本文复制引用
王宏浩,刘粟侥,张怀科,郭大光,马骏,任杰,王海彦..ZSM-22分子筛的合成、表征及烷基化性能研究[J].燃料化学学报,2016,44(8):1010-1016,7.
