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Indexed by:期刊论文

Date of Publication:2012-02-01

Journal:APPLIED SURFACE SCIENCE

Included Journals:EI、SCIE

Volume:258

Issue:8

Page Number:3738-3743

ISSN No.:0169-4332

Key Words:NH3-SCO; Cu/gamma-Al2O3; Dispersion; Copper species

Abstract:UV-vis spectra, XRD, H-2-TPR, TEM and ESR were used to characterize a series of Cu/gamma-Al2O3 catalysts, which were prepared by incipient wetness impregnation using copper nitrate, copper acetate or copper sulfate as precursors, to study the role of Cu species on Cu/gamma-Al2O3 catalysts for NH3-SCO reaction. It was found that the mixture of CuO phase and CuAl2O4 phase formed on various Cu/gamma-Al2O3 catalysts, and the Cu species and dispersion had significant influence on the Cu/gamma-Al2O3 activity. Highly dispersed CuO phase on the support would be related with its high activity for the NH3-SCO reaction. (C) 2011 Elsevier B. V. All rights reserved.