Theoretical study of the side reactions of the catalytic conversion of ethanol to butadiene on metal oxide catalysts

Theoretical study of the side reactions of the catalytic conversion of ethanol to butadiene on metal oxide catalysts

Side reactions of the ethanol-to-butadiene conversion catalyzed by MgO or ZnO were analyzed by density functional theory. We examined acetaldehyde disproportion to generate ethyl acetate, the hydrolysis of ethyl acetate to acetic acid, and the ketonization of acetic acid to generate acetone and CO2....

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Bibliographic Details
Main Authors: Megumi Kayanuma, Yu Shinke, Tomohisa Miyazawa, Tadahiro Fujitani, Yoong-Kee Choe
Format: Article
Language:English
Published: Elsevier 2021-01-01
Series:Catalysis Communications
Subjects:
Catalytic mechanism
Acetaldehyde disproportion
Ethyl acetate hydrolysis
Ketonization
DFT
Online Access:http://www.sciencedirect.com/science/article/pii/S1566736720303150
Description
Summary:Side reactions of the ethanol-to-butadiene conversion catalyzed by MgO or ZnO were analyzed by density functional theory. We examined acetaldehyde disproportion to generate ethyl acetate, the hydrolysis of ethyl acetate to acetic acid, and the ketonization of acetic acid to generate acetone and CO2. The reactivities of these reactions on MgO and ZnO were compared. Our results revealed that among the three reactions, the difference in reactivity between the two oxides was greatest for the ketonization reaction—there was a higher activation barrier on MgO than on ZnO. This would cause the higher ratio of by-products on ZnO than on MgO.
ISSN:1873-3905

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