| Autor: |
Christina Charalambous, Shanshan Xu, Shengzhe Ding, Sarayute Chansai, Edidiong Asuquo, Antonio Torres Lopez, Christopher M. A. Parlett, Jamie D. Gilmour, Arthur Garforth, Christopher Hardacre |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Frontiers in Chemical Engineering, Vol 4 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2673-2718 |
| DOI: |
10.3389/fceng.2022.1027167 |
| Popis: |
The catalytic conversion of CO2 to CH4 and CO over nickel particles supported on layered-double hydroxide (MgAl) with different metal promoters was investigated under non-thermal plasma (NTP) conditions. It has been shown that lanthanum-promoted Ni catalysts significantly enhanced the CO2 conversion in comparison to the 10Ni/MgAl catalyst (33.4% vs. 89.3%). In comparison, for the potassium-promoted catalysts, CO2 conversion is similar to that of 10Ni/MgAl but the CO selectivity increased significantly (35.7% vs. 62.0%). The introduction of La and K to Ni catalysts increased the Ni dispersion and improved the reducibility of Ni species, thus affecting CO2 conversion and product selectivity. In situ DRIFTS showed similar reaction pathways for La- and K- promoted catalysts with Ni catalysts. However, the La and K promoters significantly improved the formation of formate species on the Ni surface, facilitating CO2 conversion to useful products. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
