Effect of support on the catalytic activity of WOx promoted Pt in green diesel production
| Title | Effect of support on the catalytic activity of WOx promoted Pt in green diesel production |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Janampelli, S, Darbha, S |
| Journal | Molecular Catalysis |
| Volume | 451 |
| Pagination | 125-134 |
| Date Published | MAY |
| Abstract | Platinum and WOx-promoted platinum supported on SiO2-Al2O3, Al2O3, AlPO4-5 and ZrO2 catalysts were prepared by wet impregnation method and investigated for deoxygenation of oleic acid (OA, a representative fatty acid) producing diesel-range hydrocarbons. Support and WOx influenced the textural, electronic and catalytic properties of Pt. WOx promoted the deoxygenation activity through hydrodeoxygenation pathway. Structure-activity correlations revealed that metallicity of Pt and acidity of the catalyst are crucial in determining the catalytic performance and product selectivity. Among the catalysts tested, 4Pt-8WO(x)/ZrO2, having adequate metal dispersion and electron rich Pt (desired for hydrogen splitting), reduced WOx species (W5+;-desired for OA activation) and less amount of strong acid sites (desired to avoid hydrocracking) showed highest catalytic deoxygenation performance (OA conversion = 100 mol% and C18 hydrocarbon selectivity = 89.4% at 260 degrees C and 20 bar H-2 pressure). The study reveals that support plays a crucial role in determining the catalytic performance of platinum. (C) 2017 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.mcat.2017.11.029 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.211 |
Divison category:
Catalysis and Inorganic Chemistry