| Title | Effect of Li-Na sorbent phase in Ru/Al2O3 2 O 3 dual function materials for the Integrated CO2 2 capture and methanation |
|---|---|
| ID_Doc | 19605 |
| Authors | Cimino, S; Cepollaro, EM; Frusteri, F; Lisi, L |
| Title | Effect of Li-Na sorbent phase in Ru/Al2O3 2 O 3 dual function materials for the Integrated CO2 2 capture and methanation |
| Year | 2025 |
| Published | |
| Abstract | The design of highly performing dual functional materials (DFMs) is the key to the successful deployment of Integrated Carbon Capture and Methanation (ICCM) process that combines both steps into a single unit operation with high energy efficiency. Intending to enhance the CO2 2 working capacity while preserving high catalytic methanation activity, herein we set out to investigate the effect of combining Li and Na as the CO2 2 sorbent phase in Ru/Al2O3 2 O 3 DFMs. ICCM tests in a fixed bed reactor operated with alternate feeds indicated that combining Na with Li (or partially substituting it for Li) effectively increases the CO2 2 capture capacity and methane production of the DFM. However, this generally requires higher temperatures to properly activate the catalytic methanation and to regenerate the DFM compared to a pure Li-based formulation. Transient operando DRIFTS and catalytic kinetic experiments provided mechanistic insights into the activation/inhibition of different reaction paths on those DFMs containing only Li and/or Na. |
| https://doi.org/10.1016/j.seppur.2024.129101 |
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