{CeO2/Bi2Mo1−xRuxO6} and {Au/Bi2Mo1−xRuxO6} catalysts for low-temperature co oxidation

Edson Edain González, Ricardo Rangel*, Javier Lara, Pascual Bartolo-Pérez, Juan José Alvarado-Gil, Donald Homero Galván, Rafael García

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Nowadays, one of the most important challenges that humanity faces is to find alternative ways of reducing pollutant emissions. CeO2 /Bi2Mo1−xRuxO6 and Au/Bi2Mo1−xRuxO6 catalysts were prepared to efficiently transform carbon monoxide (CO) to carbon dioxide (CO2) at low temperatures. The systems were prepared in a two-step process. First, Bi2Mo1−xRuxO6 supports were synthesized through the hydrothermal procedure under microwave heating. Then, CeO2 was deposited on Bi2Mo1−xRuxO6 using the wet impregnation method, while the incipient impregnation method was selected to deposit gold nanoparticles. The CeO2/Bi2Mo1−xRuxO6 and Au/Bi2Mo1−xRuxO6 catalysts were characterized using SEM microscopy and XRD. Furthermore, energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy were used. Tests were carried out for the supported catalysts in CO oxidation, and high conversion values, nearing 100%, was observed in a temperature range of 100 to 250C. The results showed that the best system was the Au/Bi2Mo0.95Ru0.05O6 catalyst, with CO oxidation starting at 50C and reaching 100% conversion at 186C.

Original languageEnglish
Article number947
JournalCatalysts
Volume9
Issue number11
DOIs
StatePublished - Nov 2019
Externally publishedYes

Bibliographical note

Funding Information:
E. Gonz?lez acknowledges the scholarship provided by CONACyT. R. Rangel acknowledges the CIC-UMSNH project 2019. The authors thank W. Cauich for technical support in the XPS and SEM analyses, D. Aguilar for DRX analysis, and J. Bante for Raman spectroscopy analysis. The authors thank LANBIO-CINVESTAV and FOMIX-Yucat?n 2008-108160 Conacyt LAB-2009-01-123913, 292692, 294643 projects.

Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Au
  • BiMoRuO
  • CeO
  • CO oxidation
  • Nanostructured catalysts

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