Title : Fabrication and characterization of perovskite catalyst for oxygen removal in landfill gas (LFG)
In recent years, the purification of landfill gas (LFG) to produce pipeline-quality gas has attracted increased research interest also due to its crucial role in producing energy or other products. At present, the vast majority of catalytic deoxygen catalyst materials for the reduction of O2 in the LFG are Pd-, Pt, and Rh-based noble metals of various compositions. In this work, the perovskite-type oxides with general formula La1-xSrxCo0.2Fe0.8O3-d (x=0.1-0.9) are proposed as advanced methane oxidation catalysts for the deoxygen technology of LFG at intermediate temperature with the aim to reduce the use of precious and noble metals. The hollow fiber type catalyst with o.d. 1.4 mm/ i.d. 0.7 mm/10 mm length was prepared and tested in a lab-scale oxygen removal equipment under various temperature and feed conditions. The total oxygen conversion was confirmed at 475? and it was maintained over 100 hours in a long-term test.