Role of Lewis acidity in the deactivation of USY zeolites during 2-methylpentane cracking

被引：24

作者：

Babitz, SM

Kuehne, MA

Kung, HH

Miller, JT

机构：

[1] NORTHWESTERN UNIV, IPATIEFF LAB, EVANSTON, IL 60208 USA

[2] NORTHWESTERN UNIV, DEPT CHEM ENGN, EVANSTON, IL 60208 USA

[3] AMOCO CORP, OIL, NAPERVILLE, IL 60566 USA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1997年 / 36卷 / 08期

关键词：

D O I：

10.1021/ie9606202

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The role of strong Lewis acid sites in the deactivation of H-USY zeolite during 2-methylpentane cracking was investigated. NH3 adsorption microcalorimetry and FTIR of adsorbed NH3 were used to characterize the acid sites of an H-USY zeolite and another USY sample in which the strong Lewis acid sites were poisoned with ammonia. It was found that poisoning of the Lewis acid sites did not affect the rate of deactivation, the cracking activity, and the distribution of the cracked products. Thus, strong Lewis acid sites are not important in the cracking reaction.

引用

页码：3027 / 3031

页数：5

共 28 条

[1] ROLES OF BRONSTED AND LEWIS SITES DURING CRACKING OF N-OCTANE ON H-MORDENITE [J].