Effect of Water Vapour on the Acidity of ZSM-5 Zeolite Used for Catalytic Cracking of Naphtha to Manufacture Ethylene and Propylene

被引：0

作者：

Ma Guangwei ^{[1
]}

Xiao Jingxian ^{[1
]}

Zhang Huining ^{[1
]}

Xie Zaiku ^{[1
]}

机构：

[1] SINOPEC, Shanghai Res Inst Petrochem Technol, Shanghai 201208, Peoples R China

来源：

CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY | 2008年 / 04期

基金：

中国国家自然科学基金;

关键词：

water vapor; acidity; catalytic cracking; ethylene; propylene;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The change in acidity of the ZSM-5 zeolite was investigated after it was treated with water vapour, and its capability on ammonia adsorption was also studied after having adsorbed water vapour. The effect of water vapour on products distribution was studied during catalytic cracking of naphtha, the changes in the adsorption ability and catalytic performance of the ZSM-5 zeolite was investigated after the catalyst was loaded with phosphorus species. These results all indicated that water vapour could reduce the acid strength and acid density of ZSM-5 zeolite and affect the capability of ZSM-5 on adsorption of gases, therefore the activated energy contributed by the ZSM-5 zeolite to the catalytic cracking reaction would be low to prevent the feedstock from deepened catalytic cracking and coke formation.

引用

页码：33 / 39

页数：7

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