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Effect of Thermal Activation of Supported Catalysts Pt/MeOx,Where MOx = Al2O3, CeO2, La2O3, and ZrO2, for Complete Oxidation
Authors:Chzhu  D. P.  Tsyrul'nikov  P. G.  Kudrya  E. N.  Smolikov  M. D.  Borbat  V. F.  Bubnov  A. V.
Affiliation:(1) Boreskov Institute of Catalysis (Omsk Branch), Siberian Division, Russian Academy of Sciences, Omsk, 644053, Russia;(2) Omsk State University, Omsk, 644077, Russia
Abstract:A sharp increase in the atomic catalytic activity (ACA) of supported platinum catalysts in the model reaction of n-pentane complete oxidation is found on going from the preliminary calcination temperature of 500–600°C to a temperature of 700°C. ACA increases by an order of magnitude for the Pt/gamma-Al2O3 system, sim3 times for Pt/ZrO2, and sim1.5 times for Pt/CeO2. The per-gram activities of all catalysts decrease because of a decrease in the dispersion of supported platinum with an increase in the temperature of preliminary calcination.
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