Journal
CHINESE JOURNAL OF CATALYSIS
Volume 40, Issue 11, Pages 1788-1794Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(19)63392-9
Keywords
Cu catalysts; Metal particle morphology; Lewis acid sites; Hydrogenation; Bifunctional catalysts
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The activity of two Cu/SiO2 catalysts prepared by the chemisorption hydrolysis technique has been tested in the hydrogenation reaction of 3-methyl-cyclohexanone. Both catalysts were found to be very active at 60 degrees C and 1 atm of H-2. Characterization of the materials by FT-IR of adsorbed CO and TEM put in light the presence of well formed Cu cristallites. By assuming a cuboctahedral model we could show that the hydrogenation activity is linked to high coordination sites on the metal particle. A comparison is also reported with a sample prepared by ammonia evaporation that was found to be inactive in the hydrogenation reaction under the same experimental conditions. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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