Oxidation of methanol on different silica supported lithium molybdates

A. Erdohelyi, A. Hancz, M. Tóth, É Novák

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2 Citations (Scopus)

Abstract

The adsorption, the temperature programmed desorption and the oxidation of methanol were studied on different silica supported Li2MoO 4. It was found that after adsorption of methanol methoxy species were formed in all cases, but the thermal stability of these species were different. The lowest value was found on Li2MoO4/aerogel. Oxygen in the gas phase stabilizes the surface methoxy groups up to 600-650K. TPD spectra of adsorbed methanol show that up to 620K only CH3OH and HCHO desorbed but at higher temperatures CO2, CH4 and H2 were also formed. In the oxidation of CH3OH the rate of HCHO formation was the highest on aerogel supported Li2MoO 4 at 533K, and the selectivity was more than 70%.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalCatalysis Today
Volume91-92
DOIs
Publication statusPublished - Jul 15 2004

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Keywords

  • Lithium molybdate
  • Oxidation of methanol
  • TPD spectra

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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