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Jie Zhu, Peng Wang, Xiaoben Zhang, Guanghui Zhang, Rongtan Li, Wenhui Li, Thomas Patrick Senftle, Wei Liu, Jianyang Wang, Yanli Wang and 4 more
Identifying the dynamic structure of heterogeneous catalysts is crucial for the rational design of new ones. In this contribution, the structural evolution of Fe(0) catalysts during CO 2 hydrogenation to hydrocarbons has been investigated by using several (quasi) in situ techniques. Upon initial reduction, Fe species are carburized to Fe 3 C and then to Fe 5 C 2 . The by-product of CO 2 hydrogenation, H 2 O, oxidizes the iron carbide to Fe 3 O 4 . The formation of Fe 3 O 4 @(Fe 5 C 2 +Fe 3 O 4 ) core-shell structure was observed at steady state, and the surface composition depends on the balance of oxidation and carburization, where water plays a key role in the oxidation. The performance of CO 2 hydrogenation was also correlated with the dynamic surface structure. Theoretical calculations and controll experiments reveal the interdependence between the phase transition and reactive environment. We also suggest a practical way to tune the competitive reactions to maintain an Fe 5 C 2 -rich surface for a desired C 2+ productivity.
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Zhu, J., Wang, P., Zhang, X., Zhang, G., Li, R., Li, W., Senftle, T. P., Liu, W., Wang, J., Wang, Y., Zhang, A., Fu, Q., Song, C., & Guo, X. (2022). Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation. Science Advances, 8(5), eabm3629. https://doi.org/10.1126/sciadv.abm3629
Zhu, Jie, et al. "Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation." Science Advances, vol. 8, no. 5, 2022, pp. eabm3629, https://doi.org/10.1126/sciadv.abm3629.
Zhu, Jie, Peng Wang, Xiaoben Zhang, Guanghui Zhang, Rongtan Li, Wenhui Li, Thomas Patrick Senftle, et al. "Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation." Science Advances 8, no. 5 (2022): eabm3629. https://doi.org/10.1126/sciadv.abm3629.
Zhu J., Wang P., Zhang X. [и др.] Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation // Science Advances. — 2022. — Vol. 8, № 5. — P. eabm3629. — URL: https://doi.org/10.1126/sciadv.abm3629
@article{zhu2022dynamic,
title = {{Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation}},
author = {Jie Zhu and Peng Wang and Xiaoben Zhang and Guanghui Zhang and Rongtan Li and Wenhui Li and Thomas Patrick Senftle and Wei Liu and Jianyang Wang and Yanli Wang and Anfeng Zhang and Qiang Fu and Chunshan Song and Xinwen Guo},
journal = {Science Advances},
year = {2022},
volume = {8},
number = {5},
pages = {eabm3629},
doi = {10.1126/sciadv.abm3629},
url = {https://doi.org/10.1126/sciadv.abm3629}
}TY - JOUR AU - Zhu, Jie AU - Wang, Peng AU - Zhang, Xiaoben AU - Zhang, Guanghui AU - Li, Rongtan AU - Li, Wenhui AU - Senftle, Thomas Patrick AU - Liu, Wei AU - Wang, Jianyang AU - Wang, Yanli AU - Zhang, Anfeng AU - Fu, Qiang AU - Song, Chunshan AU - Guo, Xinwen TI - Dynamic structural evolution of iron catalysts involving competitive oxidation and carburization during CO 2 hydrogenation JO - Science Advances VL - 8 IS - 5 SP - eabm3629 PY - 2022 DA - 2022/02/04 DO - 10.1126/sciadv.abm3629 UR - https://doi.org/10.1126/sciadv.abm3629 ER -
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