02091nas a2200241   4500008004100000022001400041245010400055210006900159260007300228300001200301490000800313520120800321653001201529653001801541653003001559653002201589653002401611653001801635100001901653700002401672700002101696856013201717       2016                        eng d  a1381-116900aCatalytic decarboxylation of non-edible oils over three-dimensional, mesoporous silica-supported Pd0 aCatalytic decarboxylation of nonedible oils over threedimensiona  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN  a126-1340 v4173 a<p>Deoxygenation of fatty acids (oleic and stearic acids) and non-edible oil (jatropha oil) over Pd(1-5 wt%) supported on two structurally different, three-dimensional, mesoporous silica (SBA-12 and SBA-16) catalysts was investigated. Pd/SBA-16 (cubic mesoporous structure with space group Im (3) over barm) showed higher catalytic activity than Pd/SBA-12 (hexagonal mesoporous structure with space group p6(3)/mmc). The influence of reaction parameters like temperature, H-2 pressure and Pd content as well as the nature of the feedstock on catalytic activity and product selectivity was studied. A temperature of above 320 degrees C, reaction time of 5 h and Pd content (on silica surface) of 3 wt% enabled complete conversion of the fatty compounds into diesel-range hydrocarbons. Deoxygenation proceeded through hydrodeoxygenation and decarboxylation mechanisms when a saturated (stearic) acid was used as a feed while it advanced mainly through decarboxylation route when an unsaturated (oleic) acid was employed. Higher surface hydrophobicity and smaller size particles of Pd are the possible causes for the superior catalytic activity of Pd/SBA-16. (C) 2016 Elsevier B.V. All rights reserved.</p>10aBiofuel10aDeoxygenation10aDiesel-range hydrocarbons10aMesoporous silica10aSupported palladium10aVegetable oil1 aRaut, Ravindra1 aBanakar, Vikram, V.1 aDarbha, Srinivas  uhttps://library.ncl.res.in/content/catalytic-decarboxylation-non-edible-oils-over-three-dimensional-mesoporous-silica-supported01786nas a2200217   4500008004100000022001400041245013300055210006900188260000800257300001200265490000800277520101600285653001301301653001801314653003001332653001601362653001601378100002201394700002101416856013101437       2017                        eng d  a0920-586100aSelective and reusable Pt-WO x /Al 2 O 3 catalyst for deoxygenation of fatty acids and their esters to diesel-range hydrocarbons0 aSelective and reusable PtWO x Al 2 O 3 catalyst for deoxygenatio  cJUN  a219-2260 v3093 aTungsten 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.10abiofuels10aDeoxygenation10aDiesel-range hydrocarbons10aFatty acids10aPt catalyst1 aJanampelli, Sagar1 aSrinivas, Darbha  uhttps://library.ncl.res.in/content/selective-and-reusable-pt-wo-x-al-2-o-3-catalyst-deoxygenation-fatty-acids-and-their-esters