Selective and reusable Pt-WO x /Al 2 O 3 catalyst for deoxygenation of fatty acids and their esters to diesel-range hydrocarbons
| Title | Selective and reusable Pt-WO x /Al 2 O 3 catalyst for deoxygenation of fatty acids and their esters to diesel-range hydrocarbons |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Janampelli, S, Srinivas, D |
| Journal | Catalysis Today |
| Volume | 309 |
| Pagination | 219-226 |
| Date Published | JUN |
| Type of Article | Article |
| ISSN | 0920-5861 |
| Keywords | biofuels, Deoxygenation, Diesel-range hydrocarbons, Fatty acids, Pt catalyst |
| Abstract | Tungsten oxide promoted platinum catalysts (Pt-WOx/Al2O3) of varying composition were prepared by wet impregnation method and reduced in hydrogen atmosphere. X-ray powder diffraction and photoelectron spectroscopy revealed that Pt is completely reduced to metallic state while tungsten is in +6 and +5 oxidation state. Pt crystallite and particle sizes increased (from 1.2 to 1.4 nm and 2.5 to 3 nm, respectively) in presence of WOx (CO-chemisorption and transmission electron microscopy). Tungsten addition augmented strong acid sites. It enhanced significantly the catalytic activity of Pt/Al2O3 in deoxygenation of fatty acids and their methyl esters. Tungsten altered the reaction pathway from decarbonylation/decarboxylation to hydrodeoxygenation. A catalyst with 4 wt% Pt and 8 wt% W exhibited high catalytic performance. Complete conversion of oleic acid and octadecane product selectivity in the range 67.1 − 80.8% was obtained. Pt-WOx/Al2O3 is a stable and reusable fatty acid deoxygenation catalyst. |
| DOI | 10.1016/j.cattod.2017.06.030 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.312 |
Divison category:
Catalysis and Inorganic Chemistry
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