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Electrochemical promotion of NO reduction by C2H4 in 10% O2 using a monolithic electropromoted reactor with Rh/YSZ/Pt elements

Abstract

The reduction of NO by C2H4 in high excess of O2 and temperatures 200−300 °C was investigated using a monolithic electropromoted reactor (MEPR) with twenty-two Rh/YSZ/Pt parallel plate elements. It was found that at 220–240 °C and 10% O2 the selective catalytic reduction (SCR) of NO can be electropromoted by 450% with near 100% selectivity to N2 and ΛNO values up to 2.4. The corresponding rate enhancement ratio of complete C2H4 oxidation is up to 900% with Faradaic efficiency, \( \Uplambda _{{{\text{CO}}_{2} }} \), values up to 350. The system appears promising for practical applications.

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Acknowledgements

We thank the AKMON programme of the General Secretariat for research and development (GSRT) for partial financial support and our reviewers for helpful comments.

Author information

Correspondence to C. G. Vayenas.

 

 

Appendix 1 Studies of the electrochemical promotion of NO reduction until 10/2007 (Refs. [2449])

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Souentie, S., Hammad, A., Brosda, S. et al. Electrochemical promotion of NO reduction by C2H4 in 10% O2 using a monolithic electropromoted reactor with Rh/YSZ/Pt elements. J Appl Electrochem 38, 1159–1170 (2008). https://doi.org/10.1007/s10800-008-9548-9

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Keywords

  • Electrochemical promotion
  • NEMCA effect
  • NO reduction
  • Ethylene reductant
  • Monolithic electropromoted reactor
  • Selective catalytic reduction (SCR) of NO
  • Rhodium electrocatalyst
  • Platinum electrocatalyst