Degerman David, Shipilin Mikhail, Lömker Patrick, Goodwin Christopher M, Gericke Sabrina M, Hejral Uta, Gladh Jörgen, Wang Hsin-Yi, Schlueter Christoph, Nilsson Anders, Amann Peter
Department of Physics, AlbaNova University Center, Stockholm University, Roslagstullsbacken 21, Stockholm 114 21, Sweden.
Department of Physics Combustion Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden.
J Am Chem Soc. 2022 Apr 27;144(16):7038-7042. doi: 10.1021/jacs.2c00300. Epub 2022 Apr 8.
The CO hydrogenation reaction over the Rh(111) and (211) surfaces has been investigated operando by X-ray photoelectron spectroscopy at a pressure of 150 mbar. Observations of the resting state of the catalyst give mechanistic insight into the selectivity of Rh for generating ethanol from CO hydrogenation. This study shows that the Rh(111) surface does not dissociate all CO molecules before hydrogenation of the O and C atoms, which allows methoxy and other both oxygenated and hydrogenated species to be visible in the photoelectron spectra.
在150毫巴的压力下，通过X射线光电子能谱对Rh(111)和(211)表面上的CO加氢反应进行了原位研究。对催化剂静止状态的观察为Rh从CO加氢生成乙醇的选择性提供了机理上的见解。这项研究表明，Rh(111)表面在O和C原子氢化之前不会使所有CO分子解离，这使得甲氧基以及其他氧化和氢化物种在光电子能谱中可见。
