Selective hydrogenation of fatty acids to alcohols over highly dispersed ReOₓ/TiO₂ catalyst

Bartosz Rozmysłowicz, Alexey Kirilin, Atte Aho, Haresh Manyar, Christopher Hardacre, Johan Wärnå, Tapio Salmi, Dmitry Murzin

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Production of fatty alcohols through selective hydrogenation of fatty acids was studied over a 4% ReOx/TiO2 catalyst. Stearic acid was hydrogenated to octadecanol at temperatures and pressures between 180–200 °C and 2–4 MPa, with selectivity reaching 93%. A high yield of octadecanol was attributed to a strong adsorption of the acid compared to alcohol on the catalyst, which inhibits further alcohol transformation to alkanes. Low amounts (<7%) of alkanes (mainly octadecane) were formed during the conversion of stearic acid. However, it was found that the catalyst could be tuned for the production of alkanes. The reaction intermediates were octadecanal and stearyl stearate. Based on the reaction products analysis and catalyst characterization, a reaction mechanism and possible pathways were proposed.

Original languageUndefined/Unknown
Pages (from-to)197–207
JournalJournal of Catalysis
Issue numberSI
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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