Sorbent-Enhanced Steam Methane Reforming Reaction Studied over a Ca-Based CO2 Sorbent and Ni Catalyst

Authors

  • M. Broda,

    1. ETH Zürich, Institute of Energy Technology, Laboratory of Energy Science and Engineering, Zürich, Switzerland
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  • A. M. Kierzkowska,

    1. ETH Zürich, Institute of Energy Technology, Laboratory of Energy Science and Engineering, Zürich, Switzerland
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  • C. R. Müller

    Corresponding author
    1. ETH Zürich, Institute of Energy Technology, Laboratory of Energy Science and Engineering, Zürich, Switzerland
    • ETH Zürich, Institute of Energy Technology, Laboratory of Energy Science and Engineering, Zürich, Switzerland
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Abstract

The sorption-enhanced steam methane reforming (SE-SMR) reaction using a mixture of a Ni-hydrotalcite-derived catalyst synthesized via coprecipitation and Ca-based sorbents synthesized by the sol-gel technique was investigated. The materials were characterized by X-ray diffraction, N2 physisorption, and scanning electron microscopy. Under SE-SMR conditions, the mole fraction of hydrogen in the effluent stream was 0.99 in the pre-breakthrough stage (dry and without inert component), thus reaching thermodynamic equilibrium. The stability of the synthetic Ca-based material was attributed to the formation of a finely and homogeneously dispersed high Tammann temperature support which stabilized its nanostructured morphology.

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