Interactions among supported copper-based catalyst components and their effects on performance: A review

Supported copper-based catalysts are widely used in many industrial processes because of their excellent catalytic performance and low cost. Understanding the interactions among the various components of these catalysts is an important step in exploring the nature of the catalytic reactions and provides a valuable scientific basis for the design of novel and efficient catalysts. This review summarizes a number of our recent results in this field. In this work, copper oxide was loaded on CeO2, CexZr1−xO2, and MoO3-CeO2 supports to produce model catalysts. Investigations involving these materials demonstrated that the dispersion of copper oxide on the surface of the oxide supports, as well as some of the properties of these catalysts, can be explained on the basis of the incorporation model, which we have previously proposed. Based on spectroscopic characterization of these catalysts and examination of their catalytic performance for the oxidation of CO or the selective catalytic reduction of NO with CO/NH3, the relationships among the compositions, structures, and properties of these catalysts are discussed.

摘要负载型铜基催化剂因其良好的催化性能和相对低廉的价格在诸多重要工业催化反应中得到广泛的应用. 探讨负载型铜基催化剂中组分间的相互作用, 有助于了解相关催化作用的本质, 为现有催化剂的改进和新催化剂的设计提供科学依据. 本文综述了近年来我们就CuO在不同载体上的分散、铜物种和载体的改性及其物理化学性质以及催化CO完全氧化、CO+NO和NH3+NO+O2反应性能等方面的研究进展. 结果表明, CuO在多种氧化物载体表面的分散和所得负载型铜基催化剂的一些物理化学性质可参考“嵌入模型”得到解释, 本文主要讨论了以CeO2, CexZr1-xO2和MoO3-CeO2为载体的一些铜基催化剂的组成-结构-性质间的关系.

Graphical AbstractThis review summarizes the relationships among the compositions, structures and properties of the copper-based catalysts CuO/CeO2, CuO/CexZr1(xO2, and CuO/MoO3-CeO2 when applied to model reactions involving the oxidation of CO or the selective catalytic reduction of NO by CO/NH3.Figure optionsDownload as PowerPoint slide