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Viability of Au/CeO2–ZnO/Al2O3 Catalysts for Pure Hydrogen Production by the Water–Gas Shift Reaction

Authors

  • Tomás Ramírez Reina,

    Corresponding author
    1. Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto Universidad de Sevilla-CSIC, Avda. Américo Vespucio 49, 41092 Sevilla (Spain)
    • Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto Universidad de Sevilla-CSIC, Avda. Américo Vespucio 49, 41092 Sevilla (Spain)===

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  • Dr. Svetlana Ivanova,

    1. Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto Universidad de Sevilla-CSIC, Avda. Américo Vespucio 49, 41092 Sevilla (Spain)
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  • Dr. Juan José Delgado,

    1. Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, University of Cádiz, Apdo. 40 Puerto Real, Cádiz 11510 (Spain)
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  • Dr. Ivan Ivanov,

    1. Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 11, Sofia, 1113 (Bulgaria)
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  • Dr. Vasko Idakiev,

    1. Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 11, Sofia, 1113 (Bulgaria)
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  • Dr. Tatyana Tabakova,

    1. Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 11, Sofia, 1113 (Bulgaria)
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  • Dr. Miguel Angel Centeno,

    1. Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto Universidad de Sevilla-CSIC, Avda. Américo Vespucio 49, 41092 Sevilla (Spain)
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  • Prof. José Antonio Odriozola

    1. Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto Universidad de Sevilla-CSIC, Avda. Américo Vespucio 49, 41092 Sevilla (Spain)
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Abstract

The production of H2 pure enough for use in fuel cells requires the development of very efficient catalysts for the water–gas shift reaction. Herein, a series of gold catalysts supported on ZnO-promoted CeO2–Al2O3 are presented as interesting systems for the purification of H2 streams through the water–gas shift reaction. The addition of ZnO remarkably promotes the activity of an Au/CeO2/Al2O3 catalyst. This increase in activity is mainly associated with the enhanced oxygen storage capacity exhibited for the Zn-containing solids. High activity and good stability and resistance towards start-up–shut-down situations was found, which makes these catalysts a promising alternative for CO clean-up applications.

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