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Investigation on n -Alkane Hydroisomerization, a Comparison of IM-5 to ZSM-5 Zeolites

摘要:Porosity and acidity of zeolites are key factors for highly efficient catalyst design. Herein, we investigate the isomerization performance of a high-silica zeolite IM-5 which has a unique limited 2.5 nm "nanoslab" pore structure. Compared with the reference ZSM-5, the higher adsorption amount and rate of IM-5, proven by adsorption experiments of n-heptane and toluene, resulted in a higher isomer selectivity in n-C7 or n-C16 hydroisomerization reactions, which increased relatively by 19.5% and 91.5%, respectively. Furthermore, IM-5 also shows higher n-C7 or n-C16 conversion due to its more strong acid sites. Additionally, mesopore introduction into IM-5 significantly increases isomer selectivity, especially for long chain n-C16. The selectivities of C7 isomers and C16 isomers of mesoporous M-IM-5 increase relatively by 73.3% and 216.1% compared with microporous IM-5. Mesopores and reduced diffusion length facilitate the mass transport of bulky molecules, then decrease subsequent cracking side reaction that consumes branched isomer products.
© 2018 American Chemical Society.

ISSN号:0888-5885

卷、期、页:v 57,n 43,p14448-14459

发表日期:2018-10-31

期刊分区(SCI为中科院分区):二区

收录情况:SCI(科学引文索引印刷版),ESI(基本科学指标数据库),SCIE(科学引文索引网络版)

发表期刊名称:Industrial and Engineering Chemistry Research

通讯作者:余倩倩,黄志岗,孙厚祥,李磊

第一作者:朱小春,任申勇,申宝剑

论文类型:期刊论文

论文概要:余倩倩,黄志岗,孙厚祥,李磊,朱小春,任申勇,申宝剑,Investigation on n -Alkane Hydroisomerization, a Comparison of IM-5 to ZSM-5 Zeolites,Industrial and Engineering Chemistry Research,2018,v 57,n 43,p14448-14459

论文题目:Investigation on n -Alkane Hydroisomerization, a Comparison of IM-5 to ZSM-5 Zeolites

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