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论文类型：期刊论文

发表时间：2012-02-01

发表刊物：APPLIED SURFACE SCIENCE

收录刊物：EI、SCIE

卷号：258

期号：8

页面范围：3738-3743

ISSN号：0169-4332

关键字：NH3-SCO; Cu/gamma-Al2O3; Dispersion; Copper species

摘要：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.