Steam reforming of ethanol over metal-oxide-promoted Pt/SiO2 catalysts: Effects of strong metal-oxide interaction (SMOI)

Shin Ichi Ito; Keiichi Tomishige

doi:10.1016/j.catcom.2010.09.022

Steam reforming of ethanol over metal-oxide-promoted Pt/SiO₂ catalysts: Effects of strong metal-oxide interaction (SMOI)

Shin Ichi Ito, Keiichi Tomishige

ENG - Applied Chemistry

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

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 NbO_x. The effects of strong metal-oxide interaction (SMOI) in Pt-NbO_x enhanced the steam reforming of ethanol.

Original language	English
Pages (from-to)	157-160
Number of pages	4
Journal	Catalysis Communications
Volume	12
Issue number	3
DOIs	https://doi.org/10.1016/j.catcom.2010.09.022
Publication status	Published - 2010 Nov 3

Keywords

Bio-ethanol
Ethanol steam reforming
Hydrogen production
Pt catalyst
SMOI
SMSI

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.catcom.2010.09.022

Cite this

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title = "Steam reforming of ethanol over metal-oxide-promoted Pt/SiO2 catalysts: Effects of strong metal-oxide interaction (SMOI)",

abstract = "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.",

keywords = "Bio-ethanol, Ethanol steam reforming, Hydrogen production, Pt catalyst, SMOI, SMSI",

author = "Ito, {Shin Ichi} and Keiichi Tomishige",

year = "2010",

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T2 - Effects of strong metal-oxide interaction (SMOI)

AU - Ito, Shin Ichi

AU - Tomishige, Keiichi

PY - 2010/11/3

Y1 - 2010/11/3

N2 - 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.

AB - 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.

KW - Bio-ethanol

KW - Ethanol steam reforming

KW - Hydrogen production

KW - Pt catalyst

KW - SMOI

KW - SMSI

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