Artículos de revistas
Methanol adsorption-oxidation over V2O5 - A mass spectrometry study
Fecha
2004-06Registro en:
Gambaro, Luis Alberto; Methanol adsorption-oxidation over V2O5 - A mass spectrometry study; Elsevier Science; Journal of Molecular Catalysis A: Chemical; 214; 2; 6-2004; 287-291
1381-1169
CONICET Digital
CONICET
Autor
Gambaro, Luis Alberto
Resumen
The methanol adsorption-oxidation over V2O5 (transient study) was monitored by mass spectrometry (MS) of desorbed molecules produced over the catalyst by reactive interaction at 40, 100 and 150°C. Then, temperature programmed desorption (TPD) tests were conducted to analyze the products again by MS. Conclusions drawn from study were that methanol molecules replace some of the water molecules adsorbed onto the V 2O5, interact with those exhibiting higher adsorption energy and may suggest that methanol is linked to the solid through water molecules. By TPD, only the following products were identified: different amounts of water, formaldehyde, CO and, at low temperature, methanol. For those temperatures, V2O5 shows only redox properties since neither condensation products nor CO2 were encountered.