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CO2 Hydrogenation to Formate and Formic Acid by Bimetallic Palladium-Copper Hydride Clusters
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-04-06 , DOI: 10.1021/jacs.0c01855
Gaoxiang Liu 1 , Patricia Poths 2 , Xinxing Zhang 3 , Zhaoguo Zhu 1 , Mary Marshall 1 , Moritz Blankenhorn 1 , Anastassia N Alexandrova 2 , Kit H Bowen 1
Affiliation  

Mass spectrometric analysis of the anionic products of interaction between bimetallic palladium-copper tetrahydride anions, PdCuH4-, and carbon dioxide, CO2, in a reaction cell shows an efficient generation of the PdCuCO2H4- intermediate and formate/formic acid complexes. Multiple structures of PdCuH4- and PdCuCO2H4- are identified by a synergy between anion photoelectron spectroscopy and quantum chemical calculations. The higher energy PdCuH4- isomer is shown to drive the catalytic hydrogenation of CO2, emphasizing the importance of accounting for higher energy isomers for cluster catalytic activity. This study represents the first example of CO2 hydrogenation by bimetallic hydride clusters.

中文翻译:

双金属钯-铜氢化物簇在 CO2 加氢制甲酸和甲酸

反应池中双金属钯-铜四氢化物阴离子 PdCuH4- 和二氧化碳 CO2 之间相互作用的阴离子产物的质谱分析表明 PdCuCO2H4- 中间体和甲酸/甲酸复合物的有效生成。PdCuH4- 和 PdCuCO2H4- 的多种结构是通过阴离子光电子能谱和量子化学计算之间的协同作用确定的。更高能量的 PdCuH4-异构体显示出驱动 CO2 的催化氢化,强调了考虑更高能量异构体对簇催化活性的重要性。这项研究代表了双金属氢化物簇对 CO2 加氢的第一个例子。
更新日期:2020-04-06
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