01747nas a2200229   4500008004100000022001400041245011600055210006900171260007700240300001400317490000700331520089000338653002201228653001101250653002801261653001401289653001801303100001401321700002501335700002901360856012801389       2013                        eng d  a2192-650600aMixed Co-Mn oxide-catalysed selective aerobic oxidation of vanillyl alcohol to vanillin in base-free conditions0 aMixed CoMn oxidecatalysed selective aerobic oxidation of vanilly  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcNOV  a1384-13920 v783 a<p>Manganese-doped cobalt mixed oxide (MnCo-MO) catalyst was prepared by a solvothermal method. The as-prepared catalyst was characterised by X-ray photoelectron spectroscopy, H-2 temperature-programmed reduction, O-2 temperature-programmed oxidation and XRD. This catalyst gave 62% conversion with 83% selectivity to vanillin in 2hours for the liquid-phase air oxidation of vanillyl alcohol without using base. Three different types of metal oxides were observed in the prepared catalyst, which could be identified as Co3O4, Mn3O4 and CoMn2O4. Among these, the tetragonal phase of CoMn2O4 was found to be more active and selective for vanillyl alcohol oxidation than Co3O4 and Mn3O4. High-resolution TEM characterisation revealed the morphology of MnCo-MO nanorods with a particle size of 10nm. Successful recycling of the catalyst was also established in this oxidation reaction.</p>10aaerobic oxidation10acobalt10aheterogeneous catalysis10amanganese10aspinel phases1 aJha, Ajay1 aPatil, Kashinath, R.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/mixed-co-mn-oxide-catalysed-selective-aerobic-oxidation-vanillyl-alcohol-vanillin-base-0