ZSM-5分子筛改性对正庚烷芳构化性能的影响  

THE INFLUENCE OF MODIFICATION ON ZSM-5 PERFORMANCE FOR n-HEPTANE AROMATIZATION

作　　者：曾厚旭 王殿中[2] 宗保宁[2] 朱华元 

机构地区：[1]湖南建长石化股份有限公司,湖南岳阳414012 [2]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2006年第B10期201-205,共5页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：采用正庚烷为模型化合物，考察了改性ZSM-5分子筛在催化裂化条件下的芳构化反应性能。结果表明，ZSM-5分子筛的芳构化能力因Zn的引入得以提高，但经水热老化处理后显著下降。老化失活的原因可能是金属发生了聚集以及酸的流失。在Zn改性的基础上引入稳定剂A，同时负载Zn、A的ZSM-5分子筛具有良好的水热稳定性以及芳烃选择性。The reaction activity of modified ZSM-5 was investigated by using n-heptane as model compound under the condition of FCC. The results indicated that the aromatization ability of ZSM-5 was enhanced because of the addition of Zn. But after hydrothermal treatment, the ability of aromatization decreased very obviously. It may be resulted from the agglomeration of Zn and the loss of acid. It is also found that impregnation of Zn and A at the same time can increase the hydrothermal stability and aromatization selectivity of ZSM-5.

关 键 词：改性分子筛ZSM-5 芳构化 催化裂化 正庚烷 

分 类 号：O643.3[理学—物理化学]