化学
催化作用
活动站点
吸附
红外光谱学
光化学
无机化学
氧化物
Atom(片上系统)
反应机理
物理化学
有机化学
计算机科学
嵌入式系统
作者
Christian Schilling,Marc Ziemba,Christian Heß,M. V. Ganduglia‐Pirovano
标识
DOI:10.1016/j.jcat.2020.01.022
摘要
Here we present a combined operando infrared spectroscopic and theoretical analysis of ceria-supported gold catalysts during room temperature CO oxidation that identifies an active site for the reaction as a single gold site on the ceria support forming an Olattice–Au+–CO species. As monitored by operando infrared spectroscopy, the isolated Au+ gold site is either present as a result of the catalyst synthesis or formed under reaction conditions after CO adsorption at the perimeter of the Au–ceria interface. Our results provide new insights into the chemical nature of the active gold site and the reaction mechanism by detecting the formation of active and inhibiting species simultaneously.
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