Spaced‐confined capsule catalysts with tunable micro‐environments for efficient CO 2 conversion

Abstract CO 2 as a greenhouse gas causes a series of issues, and catalytic utilization of CO 2 to fuels is a favorable strategy. Herein, we report the discovery in CO 2 hydrogenation reaction where C 5+ yield can be evidently improved by encapsulating ZnFe 2 O 4 inside ZSM‐5, in which the micro‐envi...

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Published inAIChE journal
Main Authors Wu, Hao, Guo, Lisheng, Wang, Xianbiao, Zhou, Wenjie, Chen, Fang, Li, Da, Liu, Kai, Ai, Peipei, Wei, Yuxue, Cai, Mengdie, Sun, Song
Format Journal Article
LanguageEnglish
Published 17.03.2024
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Summary:Abstract CO 2 as a greenhouse gas causes a series of issues, and catalytic utilization of CO 2 to fuels is a favorable strategy. Herein, we report the discovery in CO 2 hydrogenation reaction where C 5+ yield can be evidently improved by encapsulating ZnFe 2 O 4 inside ZSM‐5, in which the micro‐environments of core‐shell components can be tuned. For the ZnFe 2 O 4 , the K promoter makes the FeC structure more electron deficient than the Na, which contributes to the formation of long‐chain olefins. ZSM‐5 with K or Ce modification presents enhanced adsorption ability of alkene, then promoting aromatization and isomerization reactions of alkenes. Compared with Ce, K‐ZSM‐5 contributes to isomerization rather than aromatization, forming more isoparaffins. In this work, regulating the microenvironment of capsule catalysts provides a new idea for the design of efficient tandem catalysts, and expands the ability of hybrid catalysts against other catalysts, thus presenting an excellent catalytic efficiency for CO 2 upgrading.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.18445