The steam reforming of ethanol over metal-oxide-promoted Pt/SiO2 catalysts after H2 reduction was investigated. The catalysts were prepared by sequential impregnation with an aqueous solution of Pt(NO 2)2(NH3)2 and aqueous solutions of metal complexes of V, Nb, and Mo. For a range of low temperatures (393-513 K), the ethanol conversion achieved by adding these metal oxides was greater than that achieved when an un-promoted-Pt/SiO2 catalyst was used. The highest ethanol conversion was achieved in the case of the Nb-oxide-promoted Pt/SiO2 catalyst; in this case, the ethanol conversion was the highest and it was 2.7 times higher than that in the case of the un-promoted Pt/SiO2 catalyst at 473 K. The results of catalyst characterization suggest that the surface of Pt metal particles was covered by NbOx. The effects of strong metal-oxide interaction (SMOI) in Pt-NbOx enhanced the steam reforming of ethanol.
- Ethanol steam reforming
- Hydrogen production
- Pt catalyst
ASJC Scopus subject areas
- Process Chemistry and Technology