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

作     者：Tiesen Li Ting Chen Yinghui Ye Peng Dong TinghaiWang Qingyan Cui Chan Wang Yuanyuan Yue Tiesen Li;Ting Chen;Yinghui Ye;Peng Dong;Tinghai Wang;Qingyan Cui;Chan Wang;Yuanyuan Yue

作者机构：National Engineering Research Center of Chemical Fertilizer CatalystCollege of Chemical EngineeringFuzhou UniversityFuzhou 350002China Qingyuan Innovation LaboratoryQuanzhou 362801China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2024年第66卷第2期

页      面：51-59页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the financial supports from the National Natural Science Foundation of China(22322803,22178059,22208054,22221005,22072019) Key Technologies Innovation and Industrialization Projects of Fujian Province(2022G031) Qingyuan Innovation Laboratory(00121002,00523005) 

主　　题：FeZSM-22 zeolite OSDA-free synthesis Natural minerals n-octane hydroisomerization 

摘      要：A seed-directed approach to synthesizing Fe ZSM-22 zeolite without organic structure directing agent(OSDA)was developed by using Fe-rich diatomite as all aluminum and iron *** Fe ZSM-22zeolite with optimal crystallinity and purity can be obtained by systematically adjusting feed composition and synthesis *** show that Fe ZSM-22 zeolite synthesized with OSDA-free owns high crystallinity,obvious thin needle-shaped morphology and high Bronsted/Lewis acid ***,when used for n-octane hydroisomerization reaction,its derived catalyst exhibits the best catalytic performance reflected by the highest selectivity to C_(8)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,*** work provides an alternative route to sustainably synthesizing heteroatomic zeolites with high performance.