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Mechanism of CO formation in reverse water–gas shift reaction over Cu/Al2O3 catalyst

Catalysis Letters volume 68, pages 45–48 (2000)Cite this article

Abstract

The mechanism of the reverse water–gas shift reaction over a Cu catalyst was studied by CO2 hydrogenation, temperature-programmed reduction of the Cu catalyst and pulse reaction with QMS monitoring. In comparison with the reaction of CO2 alone, hydrogen can significantly promote the CO formation in the RWGS reaction. The formate derived from association of H2 and CO2 is proposed to be the key intermediate for CO production. Formate dissociation mechanism is the major reaction route for CO production. Cu(I) species were formed from the oxidation of Cu0 associated with CO2 dissociation.

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Authors and Affiliations

  1. Department of Chemical and Materials Engineering, Chang Gung University, Tao-Yuan, 333, Taiwan, ROC

    Ching-Shiun Chen, Wu-Hsun Cheng & Shou-Shiun Lin

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  1. Ching-Shiun Chen
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  2. Wu-Hsun Cheng
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  3. Shou-Shiun Lin
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Chen, CS., Cheng, WH. & Lin, SS. Mechanism of CO formation in reverse water–gas shift reaction over Cu/Al2O3 catalyst. Catalysis Letters 68, 45–48 (2000). https://doi.org/10.1023/A:1019071117449

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  • DOI: https://doi.org/10.1023/A:1019071117449

  • reverse water–gas shift
  • temperature-programmed reduction
  • copper catalysts
  • formate mechanism