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Methane Oxidation over Cu2+/[CuOH]+ Pairs and Site-Specific Kinetics in Copper Mordenite Revealed by Operando Electron Paramagnetic Resonance and UV/Visible Spectroscopy
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2023-06-09 , DOI: 10.1002/anie.202303574
Jörg Wolfram Anselm Fischer 1 , Andreas Brenig 2, 3 , Daniel Klose 1 , Jeroen Anton van Bokhoven 2, 3 , Vitaly L Sushkevich 3 , Gunnar Jeschke 1
Affiliation  

The Cu speciation in Cu-exchanged mordenite zeolites has been determined and site-specific redox-behavior and kinetic properties of monomeric and dimeric Cu2+ active sites in partial CH4 oxidation have been analyzed by a complementary, multi-spectroscopic approach involving different operando and in situ techniques. Evidence for the participation of a [CuOH]+/Cu2+ site pair in CH4 conversion is provided.

中文翻译:

原位电子顺磁共振和紫外/可见光谱揭示铜丝光沸石中 Cu2+/[CuOH]+ 对的甲烷氧化和位点特异性动力学

已确定 Cu 交换丝光沸石中的 Cu 形态,并通过涉及不同操作的互补多光谱方法分析了部分 CH 4氧化中单体和二聚 Cu 2+活性位点的位点特异性氧化还原行为和动力学性质和现场技术。提供了[CuOH] + /Cu 2+位点对参与CH 4转化的证据。
更新日期:2023-06-09
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