Title

Perovskite catalysts enhanced combustion on porous media

Authors

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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