Experimental Study on LaFeO3/Nb2O5 Oxygen Carrier in Chemical-Looping Partial Oxidation of Methane

Chemical-looping partial oxidation of methaneChemical-looping partial oxidation of methane is a green technologyTechnology. The ironIron-based materialMaterials has good oxygen storage capacity and sinteringSintering resistance. LaFeO3 is a perovskite catalystPerovskite catalyst, which has good selectivity and structural stability in the processProcess of methaneMethane conversion to syngas. Nb is carbon resistant and can produce more oxygen vacancies. Therefore, in this study, LaFeO3 was modifiedModified with Nb2O5 and tested the partial oxidation ability of LaFeO3/Nb2O5 oxygen carrierOxygen carrier. Thermodynamic calculation was carried out by FactSage 8.1. At 900℃, the calculation results showed that: methaneMethane conversion rate was 100%, CO selectivity was 95.6%, H2 selectivity was 95.9%, no carbon deposition, and H2/CO ratio was 2. At 900 ℃, the experimental results showed that: the conversion rate of methaneMethane was 90.4%, H2 selectivity was 86%, CO selectivity was 79%, and H2/CO2 ratio was 2.18.