Catalytic deoxygen reaction of landfill gas (LFG) at intermediate temperature: The case study of perovskite-type La0.1Sr0.9Co0.2Fe0.8O3-d catalysts (LSCF)

Abstract

Recently, some perovskite-type oxides with general formula La1-xSrxCo0.2Fe0.8O3-d (0.2 < Sr-x < 0.7) were found to have reasonable catalytic activity and stability for the deoxygen reaction of landfill gas (LFG) at intermediate temperature. This study selects La0.1Sr0.9Co0.2Fe0.8O3-d (LSCF) at high Srx content (Sr-x = 0.9) as a case study to investigate the effects of O-2 content on methane oxidation reaction to remove oxygen from the LFG with two compositions characterized by low (1%) and high (2%) O-2 content. The complete oxygen conversion performance (100%) during methane oxidation was found at 425-450 degrees C and it was maintained throughout the duration of a long-term experiment (100 h). (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.