Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 2, Issue 2, Pages 1011-1017Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2014.03.021
Keywords
CO oxidation; Copper; Additional effects; Oxygen mobility; Silica
Categories
Funding
- National Natural Science Foundation of China [51174259, 91334206, 21121064, 20990221]
- Ministry of Education [20110010120002, LX2011002, NCET-13-0653]
- National 863 program of China [2012AA051001, 2013AA031702]
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The promotional effects of CeO2, MnO2 and Fe-2 O-3 on CuO/SiO2 were studied in CO oxidation reaction. The CO oxidation test showed that CeO2 had the most promoting effects and CuO/CeO2-SiO2 realized complete conversion of CO at 433 K, which is 120 K lower than that of reference catalyst CuO/SiO2, because addition of CeO2 formed more Cu+ species and moveable lattice oxygen species on the surface of the catalysts. The order of promoting effects for various added oxides is CeO2 > MnO2 > Fe-2 O-3. The characterization results proved that the Cu+ species and oxygen mobility played a very important role in CO oxidation. The various catalysts were characterized by BET, XRD, TPR, XPS and in situ DRIFT. (C) 2014 Elsevier Ltd. All rights reserved.
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