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Highly Selective Olefin Production from CO2 Hydrogenation on Iron Catalysts: A Subtle Synergy between Manganese and Sodium Additives
Abstract
Mn and Na additives have been widely studied to improve the efficiency of CO 2 hydrogenation to valuable olefins on Fe catalysts, but their effects on the catalytic properties and mechanism are still under vigorous debate. This study shows that Fe‐based catalysts with moderate Mn and Na contents are highly selective for CO 2 hydrogenation to olefins, together with low selectivities for both CO and CH 4 and much improved space‐time olefin yields compared to state‐of‐the‐art catalysts. Combined kinetic assessment and quasi in situ characterizations further unveil that the sole presence of Mn suppresses the activity of Fe catalysts because of the close contact between Fe and Mn, whereas the introduction of Na mediates the Fe–Mn interaction and provides strong basic sites. This subtle synergy between Na and Mn sheds light on the importance of the interplay of multiple additives that could bring an enabling strategy to improve catalytic activity and selectivity.
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Cites
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Kinetics of Heterogeneous Catalytic Reactions
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CO2 hydrogenation to high-value products via heterogeneous catalysis
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Direct conversion of CO2 into liquid fuels with high selectivity over a bifunctional catalyst
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Directly converting CO2 into a gasoline fuel
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Cited by
Ni, Z., Chen, X., Su, L., Shen, H., Jiang, Y., Feng, C., & Yin, C. (2025) · ACS Sustainable Chemistry & Engineering · doi:10.1021/acssuschemeng.5c05105 · Cited by 10
Metadata
- Authors
- Xu, Y., Zhai, P., Deng, Y., Xie, J., Liu, X., Wang, S., & Ma, D.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2020-09-24
- Volume
- 59
- Issue
- 48
- Pages
- 21736-21744
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W3053686616
- Cited by
- 258
- References
- 40
- FWCI
- 6.13
- Type
- journal article
- Language
- en
- Open access
- closed
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- Xu, Y., Zhai, P., Deng, Y., Xie, J., Liu, X., Wang, S., & Ma, D. (2020). Highly Selective Olefin Production from CO2 Hydrogenation on Iron Catalysts: A Subtle Synergy between Manganese and Sodium Additives. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202009620
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