Production of bio-jet fuel range alkanes from catalytic deoxygenation of Jatropha fatty acids on a WOx/Pt/TiO^sub 2^ catalyst

Bio-jet fuel range alkanes were prepared by catalytic deoxygenation reaction of non-edible acid oils with no added hydrogen. A WOx[6]/Pt[1.6]/TiO2 was used for the deoxygenation of stearic acid and Jatropha fatty acid derived from Jatropha oil by hydrolysis. Tungsten addition to the Pt/TiO2 showed r...

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Bibliographic Details
Published inFuel (Guildford) Vol. 215; p. 675
Main Authors Choi, Il-Ho, Lee, Jin-Suk, Kim, Chul-Ung, Kim, Tae-Wan, Lee, Kwan-Young, Hwang, Kyung-Ran
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier BV 01.03.2018
Subjects
Alkanes
Biodiesel fuels
Bonding strength
Catalysis
Deoxygenation
Fatty acids
Hydrocarbons
Jatropha
Jet engine fuels
Nanoparticles
Oils & fats
Platinum
Stearic acid
Titanium
Titanium dioxide
Tungsten
X ray photoelectron spectroscopy
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Summary:Bio-jet fuel range alkanes were prepared by catalytic deoxygenation reaction of non-edible acid oils with no added hydrogen. A WOx[6]/Pt[1.6]/TiO2 was used for the deoxygenation of stearic acid and Jatropha fatty acid derived from Jatropha oil by hydrolysis. Tungsten addition to the Pt/TiO2 showed remarkably enhanced performance, a degree of deoxygenation of 86%, which is more than two times higher than that of the Pt/TiO2, even though the WOx/TiO2 had almost no activity for deoxygenation reaction. The enhanced Pt-related hydrogen uptake, measured by H2-TPR, and XPS analysis showed the intimate contact of tungsten with Pt nanoparticles supported on TiO2. This tight contact allows for easier C-C cleavage over Pt nanoparticles and this is assisted by the strong bonding between tungsten and oxygen in the reactant, resulting in more C17 hydrocarbon production on the WOx/Pt/TiO2.
ISSN:0016-2361
1873-7153