02065nas a2200229   4500008004100000022001400041245014900055210006900204260010200273300001000375490000800385520110500393653002001498653002401518653005901542100002001601700003001621700001501651700001601666700002101682856013201703       2013                        eng d  a0974-362600aStructural and catalytic properties of a novel vanadium containing solid core mesoporous silica shell catalysts for gas phase oxidation reaction0 aStructural and catalytic properties of a novel vanadium containi  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScJAN  a63-690 v1253 a<p>A novel vanadium containing solid core mesoporous silica shell catalyst was synthesized with different Si/V ratios by sol-gel method under neutral conditions. The synthesized materials were characterized by various techniques and gas phase diphenyl methane oxidation reaction. The mesoporosity combined with microporosity are formed by incorporation of octadecyltrichloro silane and triethylamine in the catalyst and it was found out from E-DAX and BET-surface area analysis. The material was found to be nanocrystalline. Vanadium is present as V4 + species in as-synthesized samples and convert to V5 + on calcination. Most of the vanadium is present in tetrahedral or square pyramidal environment. Incorporation of vanadium in silica framework was confirmed by Si-29 MAS NMR analysis. Among the various vanadium containing solid core mesoporous silica shell catalysts, the Si/V = 100 ratio exhibited maximum efficiency towards diphenyl methane to benzophenone gas phase reaction. The optimum condition required for maximum conversion and selectivity was found out from the catalytic studies.</p>10adiphenylmethane10aGas phase oxidation10avanadium containing solid core mesoporous silica shell1 aVenkatathri, N.1 aPillai, Vijayamohanan, K.1 aRajini, A.1 aRaju, Nooka1 aReddy, I., A. K.  uhttps://library.ncl.res.in/content/structural-and-catalytic-properties-novel-vanadium-containing-solid-core-mesoporous-silica-001996nas a2200241   4500008004100000022001400041245011800055210006900173260011000242300001600352490000600368520106800374100001801442700001801460700001601478700001701494700001701511700002101528700002901549700002101578700002301599856013201622       2014                        eng d  a2046-206900aInfluence of method of preparation on the activity of La-Ni-Ce mixed oxide catalysts for dry reforming of methane0 aInfluence of method of preparation on the activity of LaNiCe mix  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a50226-502320 v43 a<p>La-Ni-x-Ce1-x mixed oxide catalysts were prepared by a sol-gel method varying the Ni composition (0 &lt;= x &lt;= 1). The catalysts were characterized by X-ray diffraction (XRD), inductively coupled plasma optical emission spectroscopy (ICP-OES), BET surface area, X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), H-2 chemisorption and Fourier transform infrared spectroscopy (FT-IR) techniques. CO2 reforming of methane was carried out at atmospheric pressure and 800 degrees C, maintaining a reactant CO2/CH4/N-2 ratio of 80/80/80 (total flow rate = 240 ml min(-1), GHSV of 28 800 h(-1)). The catalysts offered higher activity even at lower Ni compositions. LaNi0.4Ce0.6O3. showed the highest conversion of CH4 and CO2. The H-2/CO ratio in the syngas was stable at 0.85 +/- 0.02. The performance of the sol-gel catalysts was compared with that of the hydrothermally prepared catalysts, reported earlier. High surface area and better Ni dispersion were found to be the reasons for superior activity of the sol-gel catalysts.</p>1 aSagar, T., V.1 aSreelatha, N.1 aHanmant, G.1 aSurendar, M.1 aLingaiah, N.1 aRao, K., S. Rama1 aSatyanarayana, C., V. V.1 aReddy, I., A. K.1 aPrasad, P., S. Sai  uhttps://library.ncl.res.in/content/influence-method-preparation-activity-la-ni-ce-mixed-oxide-catalysts-dry-reforming-methane-001816nas a2200349   4500008004100000022001400041245008300055210006900138260011000207300001200317490000700329520066400336653002901000653001401029653001101043653001801054653002701072653001401099653002201113653001701135653001101152100001801163700001801181700001601199700001601215700001701231700003001248700002901278700002101307700002301328856011501351       2014                        eng d  a0376-471000aMethane reforming with carbon dioxide over La-Ni-x-Ce1-x mixed oxide catalysts0 aMethane reforming with carbon dioxide over LaNixCe1x mixed oxide  aDR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATION-NISCAIRcFEB  a478-4830 v533 a<p>La-Ni-x-Ce1-x mixed oxide (0 &lt;= x &lt;= 1) catalysts have been hydrothermally prepared, characterized by physico-chemical techniques and evaluated for CO2 reforming of methane. High conversions are achieved for both methane and carbon dioxide over the LaNi0.6Ce0.4O3 catalyst tested under the conditions of CO2/CH4/N-2 ratio of 80/80/80. (total flow rate = 240 mL/min), space velocity of 28,800 h(-1) and at a temperature of 800 degrees C. The H-2/CO ratio in the syngas is stable at 0.93 +/- 0.02. Exchanging Ni with Ce, rather than with La as reported in the literature, appears to be a better option for the improved performance of the catalysts.</p>10aCarbon dioxide reforming10aCatalysts10aCerium10aDry reforming10aHydrothermal synthesis10aLanthanum10aMethane reforming10aMixed oxides10aNickel1 aSagar, T., V.1 aSreelatha, N.1 aHanmant, G.1 aUpendar, K.1 aLingaiah, N.1 aRao, Kamaraju, Seetha Ram1 aSatyanarayana, C., V. V.1 aReddy, I., A. K.1 aPrasad, P., S. Sai  uhttps://library.ncl.res.in/content/methane-reforming-carbon-dioxide-over-la-ni-x-ce1-x-mixed-oxide-catalysts-0