Abstract
Abstract The surface copper(II) species on a CuO/SiO2 catalyst derived from binuclear copper(II) acetate monohydrate has been studied using XPS in comparison with that from the mononuclear tetraammine copper(II) complex. From the binding energy of Cu 2p3⁄2 peak and the peak ratio of Cu 2p3⁄2 and Si 2p together with the results by EXAFS, it was deduced that the highly dispersed one or two dimensional copper oxide cluster, which is interacted more weakly with SiO2, is developed on the copper(II) acetate monohydrate derived catalyst.
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