期刊
JOURNAL OF CATALYSIS
卷 396, 期 -, 页码 23-31出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2021.01.027
关键词
MTO; Shape selectivity; SAPO; Zeolites and molecular sieves
资金
- National Natural Science Foundation of China [21603223, 91745109, 91545104, 21473182, 91334205, 21703239]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2014165]
This minireview elaborates recent advances in shape selectivity of zeolites and molecular sieve catalysts for the methanol-to-olefins reaction, discussing the influences of cavity and topology structures, modification strategies, and future perspectives on shape selective catalysis.
Recent advances in the shape selectivity of zeolites and molecular sieve catalysts for the methanol-toolefins (MTO) reaction are elaborated in this minireview. The concept and classification of shape selectivity are briefly introduced and summarized. The effect of cavity structure of cavity-type zeolites and molecular sieves are comprehensively discussed, with focus on the formation of hydrocarbon pool intermediates, reaction route, diffusion, product selectivity, as well as deactivation in the chemical environment of cavity-type molecular sieves. Furthermore, the impact of topology of zeolites and molecular sieves on reaction route and product selectivity are elucidated, with special attention on the shape selectivity of 1-dimensional 10-membered ring zeolites. The debate regarding the impact of coke formation on product selectivity over SAPO-34 is also discussed in detail. Moreover, the progress of modification strategies including metal cations incorporation and pre-coking process for improving shape selectivity have been summarized. The perspective of shape selective catalysis in future is outlined and predicted. ? 2021 Published by Elsevier Inc.
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