01970nas a2200253   4500008004100000022001400041245017400055210006900229260000800298300001100306490000700317520104800324653002201372653002101394653002001415653002001435653002501455100001801480700002101498700002101519700002701540700001801567856013101585       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.  uhttp://library.ncl.res.in/content/engineering-pore-morphology-using-silica-template-route-over-mesoporous-cobalt-oxide-and-its01379nas a2200169   4500008004100000022001400041245011100055210006900166260000800235300001600243490000800259520076200267100001801029700002101047700001801068856012301086       2024                        eng d  a1932-744700aExploring the CeO2 support morphology for the carbon dioxide hydrogenation reaction using nickel catalysts0 aExploring the CeO2 support morphology for the carbon dioxide hyd  cOCT  a18782-187920 v1283 a<p>
	The catalytic activity and stability are examined for the hydrogenation of carbon dioxide under atmospheric pressure over 2 wt % Ni/CeO2 nanorods (2Ni-CeNRs), nanocubes (2Ni-CeNCs), and nanopolyhedra (2Ni-CeNPs). The 2Ni-CeNR catalysts display excellent catalytic activity and higher stability compared with 2Ni-CeNC and 2Ni-CeNP catalysts. A comprehensive understanding of the surface atomic and electronic structure versus activity has been derived using high-resolution electron microscopy and spectroscopy techniques. High metal dispersion, strong metal-support interaction (SMSI) effect and abundant oxygen vacancies are deduced to play a crucial role in determining the catalytic activity and selectivity of the CO2 hydrogenation reaction.</p>
1 aGupta, Sharad1 aJagtap, Anuradha1 aVinod, C., P.  uhttp://library.ncl.res.in/content/exploring-ceo2-support-morphology-carbon-dioxide-hydrogenation-reaction-using-nickel