Catalytic deoxygenation of fatty acids and their derivatives

Päivi Mäki-Arvela, Iva Kubickova, Mathias Snåre, Kari Eränen, Dmitry Yu. Murzin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

315 Citations (Scopus)


Catalytic deoxygenation including decarboxylation/decarbonylation of fatty acids and their esters has been investigated over Pd supported on active carbons in a semibatch reactor. The main studied parameters were catalyst acidity, type of feed, effect of solvent, and gas atmosphere. High yields of the desired product, n-heptadecane, were achieved in the decarboxylation of stearic acid at 300 °C under helium. The results demonstrate that the catalytic transformation of fatty acids proceeded mainly via decarboxylation, whereas decarbonylation was the main route for esters, according to gas-phase analysis. The gas atmosphere and the acidity of the catalyst were important factors for determining product selectivity. Over alkaline catalysts as well as under a hydrogen atmosphere, higher yields of n-heptadecane were obtained. The decarboxylation of unsaturated fatty acids leads to hydrogenated products, which reacted further to hydrocarbons.

Original languageEnglish
Pages (from-to)30-41
Number of pages12
JournalEnergy and Fuels
Issue number1
Publication statusPublished - 2007
MoE publication typeA1 Journal article-refereed


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