01971nas a2200253   4500008004100000022001400041245017400055210006900229260000800298300001100306490000700317520104800324653002201372653002101394653002001415653002001435653002501455100001801480700002101498700002101519700002701540700001801567856013201585       2020                        eng d  a2352-940700aEngineering pore morphology using silica template route over mesoporous cobalt oxide and its implications in atmospheric pressure carbon dioxide hydrogenation to olefins0 aEngineering pore morphology using silica template route over mes  cJUN  a1005860 v193 a<p>Highly ordered mesoporous cobalt oxides (denoted as m-Co-KIT-6 and m-Co-SBA-15) with three dimensional and two dimensional pore morphology respectively have been synthesized using 3D KIT-6, and 2D SBA-15 as silica template via nanocasting route. CO2 hydrogenation activity was evaluated for these mesoporous materials under atmospheric pressure conditions. In comparison to nanoparticles of cobalt oxide (Co3O4-nano), mesoporous catalysts showed excellent activity for CO2 hydrogenation due to their higher number of exposed active sites and lower mass diffusion limitations. The ordered mesoporous structure of Co3O4 catalysts favored the chain growth of carbon atoms for the production of C2+ hydrocarbons while Co3O4 nanoparticles showed strong selectivity toward CH4. High selectivity for C2+ (similar to 25%) was obtained for both m-Co-KIT-6 and m-Co-SBA-15 catalysts at 320 degrees C. In addition, the 3D pore structure of m-Co-KIT-6 catalyst exclusively formed more olefins (54.9%) fraction. (C) 2020 Published by Elsevier Ltd.</p>
10aCO2 hydrogenation10aMesoporous CO3O410aOlefin fraction10aPore morphology10aSilica hard template1 aGupta, Sharad1 aCiotonea, Carmen1 aRoyer, Sebastien1 aDacquin, Jean-Philippe1 aVinod, C., P.  uhttps://library.ncl.res.in/content/engineering-pore-morphology-using-silica-template-route-over-mesoporous-cobalt-oxide-and-its