论文部分内容阅读
金催化是纳米催化的代表性体系,金催化作用表现出复杂的结构敏感性。这篇综述总结了金催化作用研究的文献结果和我们利用从单晶到纳米晶的模型催化剂研究金催化作用的进展。展示了NO分解,CO氧化,丙烯在氢气和氧气气氛中环氧化等反应中金催化作用的结构敏感性和金催化剂的活性结构,讨论了金纳米粒子几何结构和电子结构、金纳米粒子–氧化物载体相互作用对金催化作用的影响和金表面低温高催化活性的来源,并展望了金催化作用结构敏感性的未来研究方向。
Gold catalysis is a representative system for nanocatalysis. Gold catalysis shows complex structural sensitivities. This review summarizes the literature results of gold catalysis and our progress on gold catalysis using model catalysts from single crystals to nanocrystals. The structural sensitivities of gold and gold catalysts for NO decomposition, CO oxidation, epoxidation of propylene in hydrogen and oxygen atmospheres, and the activity structures of the gold catalysts are shown. The geometries and electronic structures of Au NPs, Au NPs Carrier interaction on gold catalysis and the origin of high catalytic activity of gold surface at low temperature. The future research direction of the structural sensitivity of gold catalysis is also expected.