(396e) Low Temperature “Super-Equilibrium” Reforming of Methane through Chemical Looping
- Conference: AIChE Annual Meeting
- Year: 2022
- Proceeding: 2022 Annual Meeting
- Group: Fuels and Petrochemicals Division
- Time: Tuesday, November 15, 2022 - 4:46pm-5:05pm
In this work, we present a âsuper-equilibriumâ mode for CLR operation, which allows for avoidance of the thermodynamic limitations on reforming. In this configuration, two types of chemical looping catalyst are employed, a POx catalyst and a Splitting catalyst. A CLR POx catalyst allows for high conversion of methane at low temperatures (e.g. 650 ËC), resulting in a mixture of syngas, CO2, and H2O. High methane conversion is achieved by using a stoichiometric excess of oxygen. To improve syngas yield, the CO2 and H2O are split to CO and H2 through the oxidation of a splitting catalyst. Integration of the splitting and POx catalysts allows for pseudo continuous operation with âsuper-equilibriumâ syngas yields. Here we describe the scheme in detail, including thermodynamic analysis of the overall reaction and ideal mixed oxide systems. Experimental work confirming âsuper-equilibriumâ yields is also shown.