CO Oxidation on Cu/MgO-SiO2 Sol-Gel Derived Catalysts View Full Text


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Article Info

DATE

2003-01

AUTHORS

M.E. Manriquez, T. Lopez, R. Gomez

ABSTRACT

Sol-gel Cu//MgOSiO2 catalysts were prepared gelling tetraethoxysilane (TEOS), magnesium ethoxide and copper acetylacetonate at pH 3 and pH 9. The catalysts shown specific surface areas ca. 500 m2/g and 140 m2/g for pH 9 and pH 3 preparations respectively. Si(OH) and Si(OH)2 hydroxy groups were observed by MAS-RMN spectroscopy in both preparations. CO2-TPD and NH3-TPD desorption thermograms showed that acid and basic sites were formed on the catalysts surface. It has been found that the catalysts having the highest density of basic sites were the catalysts showing the highest activity for the CO oxidation. It is proposed that the catalytic activity depends of the relative Cu=1/Cu=2 stability given by the support acidity. More... »

PAGES

853-857

References to SciGraph publications

  • 1994-01. Carbon monoxide oxidation on Pt/TiO2 sol-gel catalysts in JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1023/a:1020759902274

    DOI

    http://dx.doi.org/10.1023/a:1020759902274

    DIMENSIONS

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