Equilibrium composition of ethanol steam reforming reaction to produce H2 applied to Ni, Co and Pt/hydrotalcite-WOx catalysts

J. L. Contreras; C. Tapia; G. A. Fuentes; L. Nuño; B. Quintana; J. Salmones; B. Zeifert; I. Córdova

doi:10.1016/j.ijhydene.2014.04.080

Equilibrium composition of ethanol steam reforming reaction to produce H₂ applied to Ni, Co and Pt/hydrotalcite-WOx catalysts

J. L. Contreras, C. Tapia, G. A. Fuentes, L. Nuño, B. Quintana, J. Salmones, B. Zeifert, I. Córdova

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

8 Scopus citations

Abstract

The purpose of this work was to investigate the difference between the experimental molar fractions of products obtained during the evaluation of Pt, Co and Ni/Hydrotalcites-WOx catalysts and the calculated composition in equilibrium for the ethanol steam reforming reaction. Mole fractions of H₂, CO₂, CH₃CHO, CH₂CH₂, CH₄ and H₂O were calculated using the stoichiometric and the minimization of the Gibbs free energy methods. The difference between calculated and experimental mole fractions was used to determine the intermediate and final compounds in the reaction mechanism and also how close to equilibrium are the reactants and final products. In addition, by comparing H₂ and the conversion, it was possible to distinguish which series of catalysts were more active. From our experimental results, the conversion order of these catalysts was as follows: Pt > Ni > Co and the reaction rate per g-atm of metal was: Pt 蠑 Ni ≈ Co.

Original language	English
Pages (from-to)	16608-16618
Number of pages	11
Journal	International Journal of Hydrogen Energy
Volume	39
Issue number	29
DOIs	https://doi.org/10.1016/j.ijhydene.2014.04.080
State	Published - 2 Oct 2014
Externally published	Yes

Keywords

Catalyst
Composition
Equilibrium
Ethanol
Steam reforming

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10.1016/j.ijhydene.2014.04.080

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title = "Equilibrium composition of ethanol steam reforming reaction to produce H2 applied to Ni, Co and Pt/hydrotalcite-WOx catalysts",

abstract = "The purpose of this work was to investigate the difference between the experimental molar fractions of products obtained during the evaluation of Pt, Co and Ni/Hydrotalcites-WOx catalysts and the calculated composition in equilibrium for the ethanol steam reforming reaction. Mole fractions of H2, CO2, CH3CHO, CH2CH2, CH4 and H2O were calculated using the stoichiometric and the minimization of the Gibbs free energy methods. The difference between calculated and experimental mole fractions was used to determine the intermediate and final compounds in the reaction mechanism and also how close to equilibrium are the reactants and final products. In addition, by comparing H2 and the conversion, it was possible to distinguish which series of catalysts were more active. From our experimental results, the conversion order of these catalysts was as follows: Pt > Ni > Co and the reaction rate per g-atm of metal was: Pt 蠑 Ni ≈ Co.",

keywords = "Catalyst, Composition, Equilibrium, Ethanol, Steam reforming",

author = "Contreras, {J. L.} and C. Tapia and Fuentes, {G. A.} and L. Nu{\~n}o and B. Quintana and J. Salmones and B. Zeifert and I. C{\'o}rdova",

note = "Publisher Copyright: {\textcopyright} 2014 Hydrogen Energy Publications, LLC.",

year = "2014",

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doi = "10.1016/j.ijhydene.2014.04.080",

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TY - JOUR

T1 - Equilibrium composition of ethanol steam reforming reaction to produce H2 applied to Ni, Co and Pt/hydrotalcite-WOx catalysts

AU - Contreras, J. L.

AU - Tapia, C.

AU - Fuentes, G. A.

AU - Nuño, L.

AU - Quintana, B.

AU - Salmones, J.

AU - Zeifert, B.

AU - Córdova, I.

PY - 2014/10/2

Y1 - 2014/10/2

N2 - The purpose of this work was to investigate the difference between the experimental molar fractions of products obtained during the evaluation of Pt, Co and Ni/Hydrotalcites-WOx catalysts and the calculated composition in equilibrium for the ethanol steam reforming reaction. Mole fractions of H2, CO2, CH3CHO, CH2CH2, CH4 and H2O were calculated using the stoichiometric and the minimization of the Gibbs free energy methods. The difference between calculated and experimental mole fractions was used to determine the intermediate and final compounds in the reaction mechanism and also how close to equilibrium are the reactants and final products. In addition, by comparing H2 and the conversion, it was possible to distinguish which series of catalysts were more active. From our experimental results, the conversion order of these catalysts was as follows: Pt > Ni > Co and the reaction rate per g-atm of metal was: Pt 蠑 Ni ≈ Co.

AB - The purpose of this work was to investigate the difference between the experimental molar fractions of products obtained during the evaluation of Pt, Co and Ni/Hydrotalcites-WOx catalysts and the calculated composition in equilibrium for the ethanol steam reforming reaction. Mole fractions of H2, CO2, CH3CHO, CH2CH2, CH4 and H2O were calculated using the stoichiometric and the minimization of the Gibbs free energy methods. The difference between calculated and experimental mole fractions was used to determine the intermediate and final compounds in the reaction mechanism and also how close to equilibrium are the reactants and final products. In addition, by comparing H2 and the conversion, it was possible to distinguish which series of catalysts were more active. From our experimental results, the conversion order of these catalysts was as follows: Pt > Ni > Co and the reaction rate per g-atm of metal was: Pt 蠑 Ni ≈ Co.

KW - Catalyst

KW - Composition

KW - Equilibrium

KW - Ethanol

KW - Steam reforming

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U2 - 10.1016/j.ijhydene.2014.04.080

DO - 10.1016/j.ijhydene.2014.04.080

M3 - Artículo

AN - SCOPUS:84908056166

SN - 0360-3199

VL - 39

SP - 16608

EP - 16618

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 29

ER -

Equilibrium composition of ethanol steam reforming reaction to produce H₂ applied to Ni, Co and Pt/hydrotalcite-WOx catalysts

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Keywords

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