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Selective hydrogenation of fatty acids to alcohols over highly dispersed ReOx/TiO2 catalyst
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2015 (English)In: Journal of Catalysis, ISSN 0021-9517, E-ISSN 1090-2694, Vol. 328, 197-207 p.Article in journal (Refereed) Published
Abstract [en]

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 degrees 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.

Place, publisher, year, edition, pages
2015. Vol. 328, 197-207 p.
Keyword [en]
Fatty acids, Fatty alcohols, Rhenium, Selective hydrogenation, Hydrocarbons
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-106553DOI: 10.1016/j.jcat.2015.01.003ISI: 000356748300023OAI: oai:DiVA.org:umu-106553DiVA: diva2:842508
Available from: 2015-07-20 Created: 2015-07-20 Last updated: 2017-12-04Bibliographically approved

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Wärnå, Johan
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