Linking Changes in Reaction Kinetics and Atomic-Level Surface Structures on a Supported Ru Catalyst for CO Oxidation
Linking Changes in Reaction Kinetics and Atomic-Level Surface Structures on a Supported Ru Catalyst for CO Oxidation
复制标题
将负载 Ru 催化剂上 CO 氧化反应动力学和原子级表面结构的变化联系起来
DOI:
10.1021/acscatal.0c03789
复制
发表时间:
2021
期刊:
影响因子:
12.9
通讯作者:
Crozier, Peter A.
中科院分区:
文献类型:
--
作者:
Miller, Benjamin K.;Crozier, Peter A.
A fundamental scientific challenge in heterogeneous catalysis is understanding the relationship between surface structure and reactivity. Catalytically relevant surface motifs may form only under reaction conditions, but inactive spectator structures can also form, complicating interpretation of the observed structures.Operandoapproaches, correlating observed structures with reaction kinetics are thus valuable to differentiate active and spectator structures. Here, we describe an atomic resolutionoperandoapproach by mass spectrometry, electron energy loss spectroscopy, and atomic resolution imaging in an environmental transmission electron microscope. Specifically, this approach is applied to the oxidation of carbon monoxide over a supported ruthenium catalyst, a system where the surface structure responsible for high activity has been the subject of debate for several decades. We find that RuO2layers formed under some reaction conditions and once thought to be the source of ruthenium catalysts’ high activity, are effective spectator species, which diminish the activity of the catalyst by reducing the surface area available for more active surface structures.
登录
查看更多内容
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
A. V. Kalinkin;V. Savchenko
通讯作者:
V. Savchenko
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
H. Pfnür;D. Menzel
通讯作者:
D. Menzel
影响因子:
2.8
作者:
P. Gai;L. Lari;M. Ward;E. Boyes
通讯作者:
P. Gai;L. Lari;M. Ward;E. Boyes
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
D. Rosenthal;F. Girgsdies;O. Timpe;R. Blume;G. Weinberg;D. Teschner;R. Schlögl
通讯作者:
R. Schlögl