化工学报2016，Vol.67Issue(8)：3374-3379,6.DOI:10.11949/j.issn.0438-1157.20160397
不同模板制备ZSM-5分子筛的酸性特征及催化裂解性能差异
Difference of acid characters and catalytic cracking performance between ZSM-5 zeolites synthesized with various templates
摘要
Abstract
ZSM-5 zeolites with similar crystal size and Si/Al ratio were synthesized in the presence ofn-butylamine (NBA), tetrapropyl ammonium (TPA+) and no template (NT), respectively. The samples were characterized by XRD, TEM, NH3-TPD, N2 sorption analysis and applied ton-hexane cracking to investigate the differenceof their acid characters, cracking selectivity and lifetime.The results showed that the samples had different acid properties and acid distribution in spite of similar Si/Al. Under the same initial conversion, the samples exhibited different product distribution. ZSM-5 using NBA and TPA+ showed higher selectivity of ethylene and propylene than ZSM-5 without template. However, the latter had much longer stable period than the former two and its conversion could stay above 96% for 1200 min.关键词
模板剂/ZSM-5/酸性质/催化裂解/寿命Key words
template/ZSM-5/acid property/catalytic cracking/lifetime分类
化学化工引用本文复制引用
马通,耿祖豹,李冰,赵琦,巩雁军..不同模板制备ZSM-5分子筛的酸性特征及催化裂解性能差异[J].化工学报,2016,67(8):3374-3379,6.基金项目
国家重点基础研究发展计划项目（2012CB215002）；国家自然科学基金项目（21176255，21276278）。@@@@supported by the National Basic Research Program of China (2012CB215002) and the National Natural Science Foundation of China (21176255,21276278) （2012CB215002）
