02066nas a2200265   4500008004100000022001400041245014100055210006900196260007300265300001200338490000800350520112500358653002201483653001501505653002001520653000801540653002101548100002001569700001401589700001801603700001801621700001501639700001701654856012901671       2014                        eng d  a0926-860X00aEffect of preparation parameters on characterization and activity of Co3O4 catalyst in liquid phase oxidation of lignin model substrates0 aEffect of preparation parameters on characterization and activit  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a130-1380 v4873 a<p>The nano structured spinel cobalt oxide (Co3O4) was prepared via simple co-precipitation method and its catalytic activity was evaluated for the liquid phase aerobic oxidation of lignin sub structure compounds such as veratryl alcohol. Catalyst preparation parameters influenced its morphology eventually affecting its oxidation activity. Thus, nano rod shaped CO3O4 catalyst showed 75% and 38% conversion of veratryl alcohol with complete selectivity to veratryl aldehyde in toluene and water, respectively, under base free condition. The influence of reaction conditions, such as temperature, oxygen pressure and catalyst loading was studied to obtain the optimum product yield and selectivity to the desired product. Furthermore, oxidation of various sub-structures of lignin model compounds was also studied over the same catalyst which was found to be in the following order: secondary alcohol &gt;di-substituted &gt; tri-substituted &gt; monosubstituted &gt; non-substitution. The stability of the catalyst was confirmed by its successful recycle for three times. (c) 2014 Elsevier B.V. All rights reserved.</p>10aConiferyl alcohol10aNano Co3O410aSinapyl alcohol10aTPR10aVeratryl alcohol1 aMate, Vivek, R.1 aJha, Ajay1 aJoshi, U., D.1 aPatil, K., R.1 aShirai, M.1 aRode, C., V.  uhttps://library.ncl.res.in/content/effect-preparation-parameters-characterization-and-activity-co3o4-catalyst-liquid-phase-0