Study of CO2 Reforming with Partial Oxidation of Methane over Ni(0)/La2O3 perovskite catalyst by Temperature-Programmed Surface Reaction
Abstract
This study investigated the performance of Ni(0)/La2O3 perovskite type as catalyst for a partial oxidation of methane(POM) and CO2 Reforming with Partial Oxidation of Methane(CRPOM). The pathway reactions with various Ni phases occuring over perovskite catalyst on POM and CRPOM reactions were observed by Temperature-Programmed-Surface-Reaction(TPSR). The POM reactions at methane concentration of 10 vol% showed that total oxidation methane step occurs at 400oC and reforming step starts at over 700oC while the progress of CRPOM indicated that reforming step occurs at lower temperature (580 to 680oC). It was found that the conversion of methane could increase up to 8 vol% (84 to 92 vol%) while that of carbon dioxide could go down to 10 vol% (88 to 68 vol%) at the defined feed composition (CH4/O2 = 2/1) and various CO2 contents (CO2/CH4 = 0,25 to 1), at constant GHSV = 30,000 h-1, 800oC.
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