文献类型：期刊文献

英文题名：Unveiling the generation of mesoporous MFI zeolites with one-dimensional fins in the assistance from small quaternary ammonium cation and its application in propane aromatization

作者：Zhang, Peng[1];Yang, Fan[2];Zhu, Xuedong[1];Zheng, Weizhong[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ, Shanghai 200237, Peoples R China;[2]Sinopec Shanghai Res Inst Petrochem Technol Co Ltd, State Key Lab Green Chem Engn & Ind Catalysis, Shanghai 201208, Peoples R China

年份：2025

卷号：302

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20244517314898);WOS:【SCI-EXPANDED(收录号:WOS:001350050800001)】；

基金：The authors are grateful for the financial support from National Natural Science Foundation of China (21776076) and the Fundamental Research Funds for the Central Universities (JKA01211710) . The au-thors also thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterizations.

语种：英文

外文关键词：mesoporous ZSM-5; Small quaternary ammonium; Propane aromatization; Zeolite synthesis

摘要：In this work, a kind of ZSM-5 zeolite with one-dimensional fins growing along the [010] direction has been successfully synthesized utilizing both tetrapropylammonium hydroxide (TPAOH) and tetramethylammonium hydroxide (TMAOH) as co-templates. With the aid of molecular dynamic simulations and a series of experimental evidences, the formation mechanism of the one-dimensional feature is determined to arise from the synergic effects between TPA+ and TMA+. Two TPA+ and three TMA+ would co-exist in a unit MFI cell at a certain crystallization period depending on the composition of zeolite and precursor, and this configuration ensures a minimum stabilization energy required for the growth along [010] direction. Investigations manifest these needle-like fins with diameters of ca. 60 nm could function as pseudo nano crystals and introduce additional pores ranging from 10 to 90 nm, which effectively promotes the diffusion capability and substantially improves the catalytic performance in propane aromatization.