| 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 |
|
| DOI |
10.1016/j.seppur.2024.129101 |
| 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. |
| Author Keywords |
CO 2 Capture and Utilization; Renewable Methane; Chemical Looping; Ruthenium; CO 2 hydrogenation; in-situ DRIFTS |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001291688000001 |
| WoS Category |
Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
https://doi.org/10.1016/j.seppur.2024.129101
|