About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2026
|
| Presentation Title |
Highly Basic Perovskites for Selective Oxidative Coupling of Methane with very high C2+ Yields |
| Author(s) |
Kannan Ramaiyan, Ryan Alcala, Angelica Benavidez, Abhaya Datye, Fernando Garzon |
| On-Site Speaker (Planned) |
Kannan Ramaiyan |
| Abstract Scope |
Direct conversion of methane to ethylene is a long-standing goal in catalysis, yet oxidative coupling of methane (OCM) has remained commercially unviable due to low C2+ yields and poor catalyst durability. Here, we report an yttrium-doped barium calcium niobate (BCNY20) perovskite catalyst that achieves a record C2+ yield of 25.5% at 750 °C for perovskites under an undiluted feed, with stable performance over 100 hours. Thermogravimetric and chemisorption analyses reveal that highly basic, exchangeable lattice oxygen species drive selective C–H activation and suppress over-oxidation. A direct correlation between Smith basicity, oxygen mobility, and C2+ yield is established across multiple perovskites. BCNY20 is the first catalyst to surpass the industrial OCM threshold, providing a new design framework for methane valorization via stable, redox-active oxide surfaces. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Temperature Materials, Sustainability |