(696b) Promoted Perovskites for Low-Temperature Chemical Looping Reforming
- Conference: AIChE Annual Meeting
- Year: 2020
- Proceeding: 2020 Virtual AIChE Annual Meeting
- Group: Catalysis and Reaction Engineering Division
- Time: Thursday, November 19, 2020 - 8:15am-8:30am
Selecting a redox catalyst particle with high selectivity and facile oxygen transport is very important for CLR. Although the system is dynamic due to the continuous change in oxidation state, carful study of the oxidation state vs. selectivity and activity of the catalyst can help probe the nature of the active surface species. Substituting the metals into the perovskite structure also allows tuning the thermodynamics of available oxygen. Surface promotion with platinum group metals, or substituting reforming active metals in the perovskite also allows independent modification of surface activity. The heats of reaction can also be tuned to optimize reactor heat integration. In the work presented, high performance redox catalyst for low-temperature conversion of methane to syngas are presented. The combined use of CLR with integrated CO2 splitting to enhance CO yields is also discussed. Process modeling indicating high energy efficiency to chemicals is shown.