CHAPTER 12:Metal–Support Interaction Effects on Gold Catalysts over Reducible Oxides
CHAPTER 12:Metal–Support Interaction Effects on Gold Catalysts over Reducible Oxides
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第 12 章：金属-载体相互作用对金催化剂对可还原氧化物的影响
DOI：
10.1039/9781782621645-00462
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
L. Liotta
中科院分区：
文献类型：
--
作者：
Hongjing Wu;L. Liotta
本章描述并批判性地分析了越来越多的文献，这些文献涉及金属-载体相互作用对金催化剂对可还原氧化物的影响。首先介绍了通过化学途径制备的可还原氧化物负载金催化剂（Au-MOx）的合成。随后的重点是金催化剂上的低温一氧化碳氧化，以及如何通过金纳米粒子和可还原氧化物之间的相互作用来增强催化活性，作为载体性质的函数。讨论了金催化剂的几种协同/协同效应以及相应的结构特性。特别关注Au-TiO2、Au-CeO2、Au-FexOy 和Au-MnOx 催化剂。在所有检查的情况下，一氧化碳氧化被用作敏感的探针反应。详细讨论了载体的性质和性能、制备方法、金颗粒尺寸和形状以及金的电子态等不同因素的反应机理和影响。最后一部分强调了多相金催化剂协同/相互作用效应的设计和控制方面的挑战。
This chapter describes and critically analyses the growing literature dealing with metal–support interaction effects on gold catalysts over reducible oxides. It begins by introducing the synthesis of reducible oxide-supported gold catalysts (Au-MOx) prepared by chemical routes. Subsequently the emphasis is on low-temperature carbon monoxide oxidation over gold catalysts and how catalytic activity is enhanced by the interaction between gold nanoparticles and reducible oxides, as a function of the nature of the support. Several kinds of synergetic/cooperation effects on gold catalysts and the corresponding structural properties are discussed. Attention is given in particular to Au-TiO2, Au-CeO2, Au-FexOy and Au-MnOx catalysts. Carbon monoxide oxidation was used as a sensitive probe reaction in all the cases examined. The reaction mechanism and influence of different factors such as the nature and properties of the support, preparation methods, gold particle size and shape, and the electronic state of gold are discussed in detail. The final section highlights the challenges in the design and control of synergetic/interaction effects in heterogeneous gold catalysts.