01941nas a2200241   4500008004100000022001400041245008900055210006900144260007300213300001000286490000800296520113700304653001001441653001301451653002301464653000801487653000801495100002301503700002001526700001901546700001701565856011701582       2008                        eng d  a0926-860X00aReaction kinetics of liquid phase air oxidation of p-cresol to p-hydroxybenzaldehyde0 aReaction kinetics of liquid phase air oxidation of pcresol to ph  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a28-350 v3393 a<p>The kinetics of liquid phase oxidation of p-cresol to p-hydroxybenzaldehyde has been investigated using insoluble cobalt oxide (CO3O4) catalyst at oxygen partial pressures in the range 0.1-1.5 MPa, reaction temperatures 333-393 K, p-cresol concentrations 0.49-1.53 kmol/m(3) and catalyst loadings 0.38-3.03 kg/m(3). The effects of oxygen partial pressure, reaction temperature, p-cresol concentration and catalyst loading on the initial rate of reaction have been studied. The initial rate varied linearly with catalyst loading up to 1.5 kg/m(3) beyond which it was independent of the catalyst loading while first-order dependence was observed with variation in oxygen partial pressure. A rate expression has been proposed considering Langmuir-Hinshelwood (LH) type mechanism, based on the initial rate data. A batch reactor model was also developed based on the kinetics studied and the concentration time profile predicted by the model was in good agreement with the experimental data. The activation energy for the liquid phase oxidation of p-cresol was found to be 39.6 kJ/mol. (c) 2008 Elsevier B.V. All rights reserved.</p>10aCo3O410akinetics10ap-cresol oxidation10aXPS10aXRD1 aKshirsagar, V., S.1 aNadgeri, J., M.1 aTayade, P., R.1 aRode, C., V.  uhttps://library.ncl.res.in/content/reaction-kinetics-liquid-phase-air-oxidation-p-cresol-p-hydroxybenzaldehyde-001670nas a2200241   4500008004100000022001400041245010800055210006900163260007300232300001000305490000700315520079400322653001001116653002401126653002701150653002101177653002101198653000801219100002001227700002101247700002901268856013101297       2013                        eng d  a1566-736700aHeterogeneous Co3O4 catalyst for selective oxidation of aqueous veratryl alcohol using molecular oxygen0 aHeterogeneous Co3O4 catalyst for selective oxidation of aqueous   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a66-690 v333 a<p>Nano-structured, spinel Co3O4 catalyst was developed for the aqueous phase oxidation of veratryl alcohol, which showed the highest conversion of 85% with 96% selectivity to veratryl aldehyde. The co-existence of Co3+ and Co2+ species in the octahedral and tetrahedral positions respectively, was confirmed by XPS, cyclic voltammogram, TPR and TPO characterization. The rod-like morphology of Co3O4 catalyst was confirmed by HRTEM. The effects of various reaction parameters namely, catalyst concentration, temperature and partial oxygen pressure on conversion and selectivity patterns were also studied for the oxidation of veratryl alcohol. This catalyst also showed an excellent stability as evidenced by successful reusability for three times. (C) 2012 Published by Elsevier B.V.</p>10aCo3O410aCyclic voltammogram10aLiquid phase oxidation10aMolecular oxygen10aVeratryl alcohol10aXPS1 aMate, Vivek, R.1 aShirai, Masayuki1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/heterogeneous-co3o4-catalyst-selective-oxidation-aqueous-veratryl-alcohol-using-molecular-0