Perovskite catalysts enhanced combustion on porous media

    Authors

    M. D. Robayo; B. Beaman; B. Hughes; B. Delose; N. Orlovskaya;R. H. Chen

    Comments

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    Abbreviated Journal Title

    Energy

    Keywords

    Porous-media burner; Low-calorific fuel; Perovskite catalysts; Catalytic; combustion; SUPER-ADIABATIC COMBUSTION; POWER GENERATION; METHANE; OXIDES; OXIDATION; BURNERS; SYSTEM; CONVERSION; EMISSIONS; ELEMENT; Thermodynamics; Energy & Fuels

    Abstract

    The effects of La-Sr-Fe-Cr-Ru based perovskite catalysts, on matrix stabilized combustion in a porous ceramic media are explored. Highly porous silicon carbide ceramics are used as a porous media for a catalytically enhanced superadiabatic combustion of a lean mixture of methane and air. The direct observation of the flame during the combustion becomes possible due to a specially designed stainless steel chamber incorporating a quartz window where the initiation and propagation of the combustion reaction/flame was directly visible. Perovskite catalytic enhancement of SiC porous matrix with La0.75Sr0.25Fe0.6Cr0.35Ru0.05O3, La0.75Sr0.25Fe0.6Cr0.4O3, La0.75Sr0.25Fe0.95Ru0.05O3, La0.75Sr0.05Cr0.95Ru0.05O3, and LaFe0.95Ru0.05O3 were used to enhance combustion. The flammability limits of the combustion of methane and air were explored using both inert and catalytically enhanced surfaces of the porous ceramic media. By coating the SiC porous media with perovskite catalysts it was possible to lower the minimum stable equivalence ratio and achieve more efficient combustion. (C) 2014 Elsevier Ltd. All rights reserved.

    Journal Title

    Energy

    Volume

    76

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    477

    Last Page

    486

    WOS Identifier

    WOS:000344444600048

    ISSN

    0360-5442

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