Elucidating the promotional effect of ultra-low Zn content on Cu for CO2 hydrogenation to methanol

Daviel Gómez, Sebastián Collins,Patricia Concepción,Romel Jiménez,Alejandro Karelovic

Journal of Catalysis（2023）

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摘要

•Addition of ultra-low amounts of Zn to Cu (Zn/Cu = 0.01) increases methanol formation rates.•On ultra-low Zn content catalysts, surface CuZn alloy sites are detected.•CuZn inhibits CO desorption and favor methanol through RWGS + CO hydro mechanism.•At higher Zn content, Cu-ZnOx sites predominate favoring the formate pathway.

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关键词

Methanol synthesis,Reaction pathway,Copper,Zinc,Operando-DRIFTS

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