Bimetallic Au-Cu/CeO2 catalyst: Synthesis, structure, and catalytic properties in the CO preferential oxidation

D. I. Potemkin, P. V. Snytnikov, E. Yu Semitut, P. E. Plyusnin, Yu V. Shubin, V. A. Sobyanin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The preparation of bimetallic Au-Cu catalysts via the decomposition of the double complex salt [Au(en)2]2[Cu(C2O 4)2]3 · 8H2O is considered. It is found that this method of preparation allows us to selectively obtain Au0.4Cu0.6 solid solution nanoparticles on the surface of a support. The composition of the particles corresponds to the stoichiometry of the double complex salt. The properties of bimetallic Au-Cu/CeO2 catalyst and monometallic Au/CeO2 and Cu/CeO2 catalysts were studied during the preferential oxidation of CO in a mixture containing CO2 and H2O. The experiments were performed in a catalytic flow system within a temperature range of 50-250°C with a mixture of the following composition, vol %: CO, 1; O2, 0.6; H2O, 10; CO2, 20; H2, 60; and the balance, He. The weight hourly space velocity (WHSV) was 276000 cm3/(g h). The bimetallic catalyst made it possible to oxidize a considerably larger amount of CO with higher selectivity with CO2 and H2O in the mixture, relative to the monometallic catalysts. The preferential oxidation of carbon monoxide in the presence of hydrogen is a promising method for the deep purification of hydrogen-containing gas mixtures in order to remove carbon monoxide. The purified hydrogen-containing gas can be used to feed portable power units based on low-temperature proton-exchange membrane fuel cells, for the synthesis of ammonia, and for hydrogenation in fine organic synthesis.

Original languageEnglish
Pages (from-to)36-43
Number of pages8
JournalCatalysis in Industry
Volume6
Issue number1
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Carbon Monoxide
Oxidation
Catalysts
Hydrogen
Carbon monoxide
Salts
Proton exchange membrane fuel cells (PEMFC)
Chemical analysis
Ammonia
Gas mixtures
Stoichiometry
Hydrogenation
Purification
Solid solutions
Gases
Nanoparticles
Decomposition
Temperature
Experiments

Keywords

  • Au-Cu catalysts
  • Bimetallic catalysts
  • Catalyst preparation
  • CO removal
  • Double complex salts
  • Gold-copper catalysts
  • Hydrogen generation
  • Preferential oxidation of CO

ASJC Scopus subject areas

  • Catalysis

Cite this

Potemkin, D. I., Snytnikov, P. V., Semitut, E. Y., Plyusnin, P. E., Shubin, Y. V., & Sobyanin, V. A. (2014). Bimetallic Au-Cu/CeO2 catalyst: Synthesis, structure, and catalytic properties in the CO preferential oxidation. Catalysis in Industry, 6(1), 36-43. https://doi.org/10.1134/S2070050414010073

Bimetallic Au-Cu/CeO2 catalyst : Synthesis, structure, and catalytic properties in the CO preferential oxidation. / Potemkin, D. I.; Snytnikov, P. V.; Semitut, E. Yu; Plyusnin, P. E.; Shubin, Yu V.; Sobyanin, V. A.

In: Catalysis in Industry, Vol. 6, No. 1, 2014, p. 36-43.

Research output: Contribution to journalArticle

Potemkin, DI, Snytnikov, PV, Semitut, EY, Plyusnin, PE, Shubin, YV & Sobyanin, VA 2014, 'Bimetallic Au-Cu/CeO2 catalyst: Synthesis, structure, and catalytic properties in the CO preferential oxidation', Catalysis in Industry, vol. 6, no. 1, pp. 36-43. https://doi.org/10.1134/S2070050414010073
Potemkin, D. I. ; Snytnikov, P. V. ; Semitut, E. Yu ; Plyusnin, P. E. ; Shubin, Yu V. ; Sobyanin, V. A. / Bimetallic Au-Cu/CeO2 catalyst : Synthesis, structure, and catalytic properties in the CO preferential oxidation. In: Catalysis in Industry. 2014 ; Vol. 6, No. 1. pp. 36-43.
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