Catalytic Combustion of Effluents from Methane-Based MCFC Device over Cordierite Supported Pd/La-Al2O3 Catalyst

Jong Min Lee; Young Kyu Hwang; Ajit Singh Mamman; Sang Min Lee; Do Young Hong; Kook Young Ahn; Jong San Chang

doi:10.4028/www.scientific.net/SSP.135.1

Paper Titles

Catalytic Combustion of Effluents from Methane-Based MCFC Device over Cordierite Supported Pd/La-Al₂O₃ Catalyst
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Formation of Hollow Zinc Oxide by Oxidation and Subsequent Thermal Treatment
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Antifungal Effectiveness of Nanosilver Colloid against Rose Powdery Mildew in Greenhouses
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Fabrication of Oriented TiO₂-Based Nanotube Array Thin Films
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Colloidal Crystal Templating of Two-Dimensional Ordered Macroporous SiCN Ceramics
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Catalytic Combustion of Effluents from Methane-Based MCFC Device over Cordierite Supported Pd/La-Al₂O₃ Catalyst

Abstract:

Influence of steam, loading amounts of Pd (viz., 0.7, 2.1, 5.4 wt %) and other process parameters (viz. GHSV and temperature) on methane-based MCFC anodeeffluents over Pd-based La2O3-Al2O3 supported on honeycomb substrate have been investigated. TGA study reveals precise temperature of decomposition of Pd-O in catalytic combustion at high temperature. An increase in methane conversion at elevated temperature is attributable to decomposition of PdO to Pd active phase. The XRD analysis of spent catalysts suggests that the reflections corresponding to PdO gradually become weaker with increase in the Pd loading. The addition of 4% water in the feed decreases the methane conversion due to the reversible reaction of PdO with water adduct resulting in the formation of inactive Pd(OH)2 phase. However, the methane conversion remains unaffected and increases monotonously with 100% water concentration in the feed.