| Autor: |
Yifei Feng, Liang Shen, Wenhao Zhang, Xiaohan Yuan, Minghui Zhu, Jing Xu |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of CO2 Utilization, Vol 80, Iss , Pp 102683- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2212-9839 |
| DOI: |
10.1016/j.jcou.2024.102683 |
| Popis: |
The conversion of carbon dioxide (CO2) into high-value products plays a critical role in mitigating atmospheric CO2 levels. Recently, low-cost Ni-based catalysts have been garnering attention due to their exceptional hydrogenation ability. This study focuses on the synthesis of Cu-Ni bimetallic catalysts for CO2 hydrogenation and the systematic evaluation of the relationship between structural evolution and catalytic activity. Through investigation of the selectivity regulation of Cu on Ni-based catalysts, it was discovered that the addition of Cu led to a significant shift in catalytic activity and selectivity. Specifically, the Cu addition transitioned the reaction from being CH4-selective to CO-selective. Moreover, the introduction of Cu preferentially generated a Cu-Ni alloy during the reaction, which resulted in a significant number of *CO species with strong adsorption strength at the interface. Consequently, the subsequent hydrogenation of these *CO species was impeded, rendering the catalyst CO-selective. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect