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

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

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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.

FeZSM-22 zeoliteOSDA-free synthesisNatural mineralsn-octane hydroisomerization

Tiesen Li、Ting Chen、Yinghui Ye、Peng Dong、Tinghai Wang、Qingyan Cui、Chan Wang、Yuanyuan Yue

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National Engineering Research Center of Chemical Fertilizer Catalyst,College of Chemical Engineering,Fuzhou University,Fuzhou 350002,China

Qingyuan Innovation Laboratory,Quanzhou 362801,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Technologies Innovation and Industrialization Projects of Fujian ProvinceQingyuan Innovation LaboratoryQingyuan Innovation Laboratory

22322803221780592220805422221005220720192022G0310012100200523005

2024

10.1016/j.cjche.2023.11.002

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
年,卷(期)：2024.66(2)
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