Reaction rate enhancement by reducing surface diffusion barriers of guest molecules over ZSM-5 zeolites: a structured illumination microscopy study

被引：14
|
作者：
Peng, Shichao [1 ,3 ]
Li, Hua [1 ]
Liu, Wenjuan [2 ,3 ]
Yu, Junyi [1 ,3 ]
Xu, Zhaochao [2 ]
Ye, Mao [1 ]
Liu, Zhongmin [1 ,3 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 10049, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2022年 / 430卷
基金：
中国国家自然科学基金;
关键词：
Zeolite catalysis; Surface barriers; Catalytic reaction rate; ZSM-5; Structured illumination microscopy; NANOPOROUS MATERIALS; CATALYTIC CRACKING; CRYSTALS; MORPHOLOGY; SIZE;
D O I：
10.1016/j.cej.2021.132760
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Mass transfer of guest molecules is crucial for zeolite catalysis. Compared to intracrystalline diffusion, the surface barriers in zeolite catalysis have been less understood. Taking furfuryl alcohol oligomerization catalyzed by ZSM5 zeolites as model reaction, here we present a single-crystal level study and gain insight into the surface barriers induced spatiotemporal evolution of oligomer products using structured illumination microscopy (SIM). It is shown that, as a result of the enhanced accessibility to zeolite crystals, promoting the surface permeability leads to the increase in catalytic reaction rate that is characterized as the generation rate of oligomer products.
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收藏
页数：6
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