燃料化学学报2019，Vol.47Issue(12)：1468-1475,8.
ZSM-5分子筛骨架铝落位对甲醇转化制芳烃催化性能影响
Effect of framework Al siting on catalytic performance in methanol to aromatics over ZSM-5 zeolites
摘要
Abstract
ZSM-5 zeolites with different framework AI(AIF) siting were hydrothermally synthesized by adding mineralizer，urea，or by changing the silicon source. The morphology，textural properties，AIF siting，and acidity of different ZSM-5 zeolites were characterized using SEM，XRD，BET，XRF，MAS NMR, NH3-TPD，and Py-IR. Furthermore，the conversion of methanol to aromatics(MTA) was used to investigate the catalytic performance of different catalysts. The results suggested that different ZSM-5 zeolites were highly crystalline with a uniform morphology，but there were large differences in AIF siting and acidity. The AIF in the ellipsoidal ZSM-5 sample was mainly distributed in straight or sinusoidal channels and displayed more acidic sites. AIF of bulk ZSM-5 was mainly located at the intersection of channels，and it showed the lowest amount of strong acid sites. The ellipsoidal ZSM-5 catalyst in which AIF was mainly located in straight or sinusoidal channels exhibited more acidic sites and higher stability and aromatic selectivity during the MTA reaction.关键词
ZSM-5分子筛/骨架铝分布/甲醇转化制芳烃Key words
ZSM-5 zeolites/framework A1 siting/methanol to aromatics分类
化学化工引用本文复制引用
张立伟1,2,张怀科1,3,陈志强1,2,刘粟侥3*,任杰1,3*..ZSM-5分子筛骨架铝落位对甲醇转化制芳烃催化性能影响[J].燃料化学学报,2019,47(12):1468-1475,8.基金项目
国家自然科学基金(21902171)资助 （21902171）
