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Promoting effect of the alloy formation over Ni-Fe/Al2O3 catalysts for the steam reforming of biomass tar to synthesis gas

Published online by Cambridge University Press:  07 July 2011

Lei Wang ,
Dalin Li ,
Mitsuru Koike ,
Yoshinao Nakagawa  and
Keiichi Tomishige
Lei Wang
Affiliation:
School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Dalin Li
Affiliation:
School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan Japan Science and Technology Agency, CREST, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Mitsuru Koike
Affiliation:
School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Yoshinao Nakagawa
Affiliation:
School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan Japan Science and Technology Agency, CREST, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Keiichi Tomishige*
Affiliation:
School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan Japan Science and Technology Agency, CREST, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
*
*Email: [email protected]. [email protected]
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Abstract

The addition of Fe addition with suitable amount to Ni /Al2O3 catalyst showed higher catalytic performance than corresponding monometallic Ni and Fe catalysts in the steam reforming of tar from the pyrolysis of cedar wood. Characterization of the catalysts indicates the formation of the Ni-Fe alloys and the surface segregation of Fe atoms on the alloys, and it was also suggested that the structure was almost maintained during the reaction. The surface Fe atoms accept oxygen atom from steam and subsequently supply oxygen species to adsorbed carbonaceous species on neighboring surface Ni atoms, which is connected to the promotion of the steam reforming reaction of tar and the suppression of the coke formation.

Keywords

NiFecatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1326: Symposium F – Renewable Fuels and Nanotechnology , 2011 , mrss11-1326-f05-02
Copyright
Copyright © Materials Research Society 2011

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References

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