Bridging Thermal Catalysis and Electrocatalysis: Catalyzing CO 2 Conversion with Carbon‐Based Materials

Autor: Drew Higgins, David A. Cullen, Zhenan Bao, Samuel M. Dull, Sindhu S. Nathan, Arun S. Asundi, David M. Koshy, Thomas F. Jaramillo, Ahmed M. Abdellah, Stacey F. Bent
Rok vydání: 2021
Předmět:
Zdroj: Angewandte Chemie International Edition. 60:17472-17480
ISSN: 1521-3773
1433-7851
DOI: 10.1002/anie.202101326
Popis: Understanding the differences between reactions driven by elevated temperature or electric potential remains challenging, largely due to materials incompatibilities between thermal catalytic and electrocatalytic environments. We show that Ni, N-doped carbon (NiPACN), an electrocatalyst for the reduction of CO2 to CO (CO2 R), can also selectively catalyze thermal CO2 to CO via the reverse water gas shift (RWGS) representing a direct analogy between catalytic phenomena across the two reaction environments. Advanced characterization techniques reveal that NiPACN likely facilitates RWGS on dispersed Ni sites in agreement with CO2 R active site studies. Finally, we construct a generalized reaction driving-force that includes temperature and potential and suggest that NiPACN could facilitate faster kinetics in CO2 R relative to RWGS due to lower intrinsic barriers. This report motivates further studies that quantitatively link catalytic phenomena across disparate reaction environments.
Databáze: OpenAIRE
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