Mechanism and Micro Kinetic Model for Electroreduction of CO<sub>2</sub> on Pd/C: The Role of Different Palladium Hydride Phases
نویسندگان
چکیده
We measured the reaction kinetics of electrochemical reduction CO2 to formate on Pd/C and evaluated several proposed mechanisms, by comparing model-described observed rates formation HCOO– H2 as a function parameters (pH2, pCO2, potential). An ?-/?-hydride mechanism, based an ?-hydride phase active for ?-hydride Pd-phase hydrogen evolution, described experimental data our other laboratories reported in literature satisfactorily. After parametrization, using set including only H2, this mechanism also predicted outcome D2 isotope labeling experiments correctly. Analyses results indicate that ratio hydride rate are key factors affecting production selectivity, thereby identifying areas further (spectroscopic) studies validation.
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ژورنال
عنوان ژورنال: ACS Catalysis
سال: 2021
ISSN: ['2155-5435']
DOI: https://doi.org/10.1021/acscatal.1c01325