01721nas a2200241   4500008004100000022001400041245009200055210006900147260007400216300001200290490000800302520090100310653000901211653001201220653001501232653001601247653000701263100002601270700002401296700001801320700002901338856011201367       2012                        eng d  a1878-519000aPreferential oxidation of CO on Ni/CeO2 catalysts in the presence of excess H-2 and CO20 aPreferential oxidation of CO on NiCeO2 catalysts in the presence  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcDEC  a405-4190 v1073 a<p>Preferential oxidation of CO (CO-PROX) was carried out over Ni supported on CeO2 prepared by the co-precipitation method. The influence of metal loadings (2.5, 5 and 10 wt.% Ni) and the reaction conditions such as reaction temperature and feed composition on CO oxidation and oxidation selectivity were evaluated by using dry reformate gas. No other reactions like CO or CO2 methanation, coking, reverse water gas shift (RWGS) reaction is observed in the temperature range of 100-200 A degrees C on these catalysts. Hydrogen oxidation dominates over CO oxidation above the temperature of 200 A degrees C. An increase in oxygen leads to an increase in CO conversion but a simultaneous decrease in the O-2 selectivity. It has been noticed that 5 and 10 % Ni/CeO2 show better catalytic activity towards CO-PROX reaction. These catalysts were characterized by S-BET, XRD, TEM, XPS and H-2-TPR.</p>10aCeO210aCO-PROX10afuel cells10aMethanation10aNi1 aMalwadkar, Sachin, S.1 aBera, Parthasarathi1 aHegde, M., S.1 aSatyanarayana, C., V. V.  uhttps://library.ncl.res.in/content/preferential-oxidation-co-niceo2-catalysts-presence-excess-h-2-and-co2-001809nas a2200253   4500008004100000022001400041245009700055210006900152260007300221300001200294490000800306520093500314653001601249653001601265653001401281653002901295653001001324100002601334700001901360700002001379700001901399700001801418856011901436       2014                        eng d  a1381-116900aEffect of pt incorporation in LaBO3 (B = Mn, Fe, Co) perovskites on water gas shift activity0 aEffect of pt incorporation in LaBO3 B Mn Fe Co perovskites on wa  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a506-5130 v3953 a<p>Pt incorporated perovskites LaBO3 (B = Mn, Co, Fe) were synthesised and characterised to understand the charge state of Pt in these materials. At the temperature range used in this study, Pt could be stabilised in ionic form in Co and Fe perovskites but not in LaMnO3. Consequent to incorporation of Pt in +2 and +4 oxidation states, reduction in B site ion charge state occurred, enhancing oxygen vacancies. Pt doped Co and Fe perovskites showed high activity for CO conversion under water gas shift conditions but the activity characteristics were found to be different for the two catalysts; LaCo1-xPtxO3-delta showed methanation whereas the Fe counterpart was active in water gas shift reaction. It was also observed that methanation could be decreased and water gas shift enhanced in case of Pt doped Co perovskite when compared to Pt impregnated perovskite or mixed oxides. (C) 2014 Elsevier B.V. All rights reserved.</p>10aMethanation10aPerovskites10aPt doping10aWater gas shift reaction10aXANES1 aRajesh, Thattarathody1 aUpadhyay, Anuj1 aSinha, Anil, K.1 aDeb, Sudip, K.1 aDevi, Nandini  uhttps://library.ncl.res.in/content/effect-pt-incorporation-labo3-b-mn-fe-co-perovskites-water-gas-shift-activity-001852nas a2200241   4500008004100000022001400041245009300055210006900148260000800217300001200225490000700237520110600244653001201350653001201362653001701374653001601391653000801407653000801415100002201423700002401445700002901469856011201498       2020                        eng d  a1002-072100aInfluence of cobalt on performance of Cu-CeO2 catalysts for preferential oxidation of CO0 aInfluence of cobalt on performance of CuCeO2 catalysts for prefe  cSEP  a941-9500 v383 a<p>{Copper and cobalt oxides supported on CeO2 were investigated for preferential oxidation of carbon monoxide (CO-PROX) in the presence of excess hydrogen and CO2. (CuO)(1-x)(Co3O4)(x/3)-(CeO2)(2.5) (x = 0, 0.25, 0.50, 0.75, 0.85 and 1) catalysts were prepared by coprecipitation method. These mixed oxide catalysts were characterized by several physicochemical techniques, such as BET surface area (SBET), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), temperature programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS). XRD studies show the peaks related to CuO and Co3O4 phases in copper and cobalt containing CeO2 catalysts. The average particle size of the CeO2 crystallites is in the range of 8-10 nm as evaluated from HRTEM studies. XPS studies demonstrate that Cu, Co and Ce in (CuO)(1-x)(Co3O4)(x/3)-(CeO2)(2.5) catalysts are presented in +2 and +1, +3 and +2 and +4 and +3 oxidation states, respectively. The catalyst with x = 0.75 shows better activity and selectivity towards CO-PROX. Though the catalyst with only copper (CuO-CeO2</p>
10aCO-PROX10aCu-CeO210aH2O addition10aMethanation10aXPS10aXRD1 aMalwadkar, Sachin1 aBera, Parthasarathi1 aSatyanarayana, C., V. V.  uhttps://library.ncl.res.in/content/influence-cobalt-performance-cu-ceo2-catalysts-preferential-oxidation-co