Catalytic upgrading of ethanol to higher alcohols over nickel-modified Cu–La 2 O 3 /Al 2 O 3 catalysts

A series of nickel and nickel free modified Cu–La 2 O 3 /Al 2 O 3 catalysts were prepared using a simple wetness impregnation method and applied for the catalytic upgrading of ethanol to higher alcohols. 56.7% ethanol conversion, 76.1% total selectivity to higher alcohols and 43.1% total yield there...

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Bibliographic Details
Published in:Catalysis science & technology 2023-01, Vol.13 (1), p.170-177
Main Authors: He, Jinfeng, Li, Xiuzhen, Kou, Jianyao, Tao, Tingjie, Shen, Xinyue, Jiang, Dahao, Lin, Lili, Li, Xiaonian
Format: Article
Language:English
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Summary:A series of nickel and nickel free modified Cu–La 2 O 3 /Al 2 O 3 catalysts were prepared using a simple wetness impregnation method and applied for the catalytic upgrading of ethanol to higher alcohols. 56.7% ethanol conversion, 76.1% total selectivity to higher alcohols and 43.1% total yield thereof were achieved over the optimal 0.65%NiO–Cu–La 2 O 3 /Al 2 O 3 catalyst. The addition of an appropriate amount of NiO effectively promoted ethanol upgrading to higher alcohols by increasing the amount of surface Cu active species and optimizing the acid–base properties of Cu-based catalysts, thus obviously enhancing the dehydrogenation/hydrogenation capacity, as well as the activity of aldol condensation of the catalysts. This study will provide inspiration or direction for the design of more efficient Cu-based catalysts for the catalytic upgrading of ethanol.
ISSN:2044-4753
2044-4761
DOI:10.1039/D2CY01554D