Photo-assisted Degradation of 2-Propanol in Gas-Solid Regime by Using TiO2 Impregnated with Heteropolyacids H3PW12O40

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24 Citazioni (Scopus)

Abstract

Commercial and home prepared TiO2 samples impregnated with tungstophosphoric acid (H3PW12O40)were used for the photo-assisted degradation of 2-propanol in gas–solid regime. The characterizationresults evidenced a good coverage of the polyoxometalate (POM) onto the surface of TiO2 along with amarginal effect of the presence of the POM on the specific surface area, morphology and cristallinity ofthe samples. Propene was the main intermediate product revealed in 2-propanol photocatalyticdegradation by using as photocatalysts the samples containing the POM, whereas propanone wasmainlyobtained when the photocatalysts was bare TiO2, both commercial or home prepared. Acetaldehyde wasalso found as an intermediate product along with traces of isopropyl ether, mesityl oxide and isobutylmethyl-ketone that were also detected as gaseous products in all the runs. Carbon dioxide and waterwere the ultimate oxidation products
Lingua originaleEnglish
pagine (da-a)42-47
Numero di pagine6
RivistaCatalysis Today
Volume144
Stato di pubblicazionePublished - 2009

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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