Comparison of n-Dodecane Hydroisomerization Performance Over Pt Supported ZSM-48 and ZSM-22

被引：22

作者：

Wang, Yan ^{[1
]}

Liu, Wei ^{[1
]}

Zhang, Wei ^{[1
]}

Sun, Jinghui ^{[1
]}

Li, Sai ^{[1
]}

Zheng, Jiajun ^{[1
]}

Fan, Binbin ^{[1
]}

Li, Ruifeng ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Peoples R China

来源：

CATALYSIS LETTERS | 2021年 / 151卷 / 12期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Hydroisomerization; ZSM-48; ZSM-22; N-dodecane;

D O I：

10.1007/s10562-021-03587-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

ZSM-48 and ZSM-22 zeolites with similar Si/Al ratio were synthesized and modified by alkali treatment. Moreover, n-dodecane hydroisomerization performance of Pt supported ZSM-22 and ZSM-48 were investigated. The catalytic results showed that the activity and the isomers selectivity of n-dodecane hydroisomerization could be improved by alkali treatment. The isomers distributions were distinct for Pt/ZSM-48 and Pt/ZSM-22. Mono-branched isomers near the end of the chains were more prone to be generated on Pt/ZSM-22 catalyst, which suggested "pore-mouth" catalysis model dominating the hydroisomerization catalysis. However, di-branched isomers and mono-branched isomers with methyl near the middle of the carbon chains were favorable to be formed over Pt/ZSM-48 catalyst according to the "key-lock" catalysis model. Moreover, more central-branched isomers were formed at high reaction temperature (> 320 degrees C) especially for Pt/ HZSM-22. [GRAPHICS] .

引用

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页码：3492 / 3500

页数：9

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