中国化学工程学报(英文版)2024，Vol.66Issue(2) ：51-59.DOI:10.1016/j.cjche.2023.11.002

OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization

Tiesen Li Ting Chen Yinghui Ye Peng Dong Tinghai Wang Qingyan Cui Chan Wang Yuanyuan Yue
中国化学工程学报(英文版)2024，Vol.66Issue(2) ：51-59.DOI:10.1016/j.cjche.2023.11.002
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OSDA-free synthesis of FeZSM-22 zeolite from natural minerals for n-octane hydroisomerization

Tiesen Li 1Ting Chen 2Yinghui Ye 2Peng Dong 2Tinghai Wang 1Qingyan Cui 1Chan Wang 2Yuanyuan Yue1
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作者信息

  • 1. National Engineering Research Center of Chemical Fertilizer Catalyst,College of Chemical Engineering,Fuzhou University,Fuzhou 350002,China;Qingyuan Innovation Laboratory,Quanzhou 362801,China
  • 2. National Engineering Research Center of Chemical Fertilizer Catalyst,College of Chemical Engineering,Fuzhou University,Fuzhou 350002,China
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Abstract

A seed-directed approach to synthesizing FeZSM-22 zeolite without organic structure directing agent(OSDA)was developed by using Fe-rich diatomite as all aluminum and iron sources.The FeZSM-22 zeolite with optimal crystallinity and purity can be obtained by systematically adjusting feed composi-tion and synthesis conditions.Characterizations show that FeZSM-22 zeolite synthesized with OSDA-free owns high crystallinity,obvious thin needle-shaped morphology and high Bronsted/Lewis acid ratio.Significantly,when used for n-octane hydroisomerization reaction,its derived catalyst exhibits the best catalytic performance reflected by the highest selectivity to C8 isomers compared to the two reference catalysts prepared based on a Fe-containing and a Fe-free ZSM-22 synthesized through an OSDA-directed route from natural diatomite and conventional chemicals,respectively.This work provides an alternative route to sustainably synthesizing heteroatomic zeolites with high performance.

Key words

FeZSM-22 zeolite/OSDA-free synthesis/Natural minerals/n-octane hydroisomerization

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基金项目

National Natural Science Foundation of China(22322803)

National Natural Science Foundation of China(22178059)

National Natural Science Foundation of China(22208054)

National Natural Science Foundation of China(22221005)

National Natural Science Foundation of China(22072019)

Key Technologies Innovation and Industrialization Projects of Fujian Province(2022G031)

Qingyuan Innovation Laboratory(00121002)

Qingyuan Innovation Laboratory(00523005)

出版年

2024
中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
参考文献量43
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