A study of the mechanism of triglyceride hydrodeoxygenation over alumina-supported and phosphatized-alumina-supported Pd catalysts

Anna Vikar,Hanna E. Solt,Gyula Novodarszki,Magdolna R. Mihalyi,Robert Barthos,Attila Domjan,Jeno Hancsok,Jozsef Valyon,Ferenc Lonyi

Journal of Catalysis（2021）

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摘要

•Hydrodeoxygenation of tricaprylin and valeric acid were studied over alumina-supported Pd catalysts.•Pd/phosphatized γ-Al2O3 was a much better HDO catalyst than Pd/γ-Al2O3.•Carboxylates were found to be HDO surface intermediates.•Phosphatization eliminated Al⊕– O⊝ surface pair sites and enhanced formation of reactive bidentate carboxylates.•HDO proceeded via C-O bond hydrogenolysis and hydrodeoxygenation of aldehyde intermediate.

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关键词

Hydrodeoxygenation,Pd/γ–Al2O3,Pd/phosphatized γ–Al2O3,Tricaprylin,Valeric acid

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