The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Enhanced Carbon-Resistant Dry Reforming Fe-Ni Catalyst: Role of Fe
Abstract
A series of bimetallic Fe-Ni/MgAl 2 O 4 catalysts with Fe/Ni ratios between 0 and 1.5 have been examined for methane dry reforming at 923–1073 K, atmospheric pressure, and a CH 4 /CO 2 ratio of 1. The evolution of the catalyst structure during H 2 temperature-programmed reduction (TPR), CO 2 temperature-programmed oxidation (TPO), and dry reforming is examined using time-resolved in situ X-ray diffraction (XRD). During H 2 -TPR up to 973 K, Fe 2 O 3 and NiO are reduced to Fe and Ni. Higher temperatures lead to Fe-Ni alloy formation. The alloy remains stable up to 900 K under CO 2 -TPO and is decomposed to Ni and Fe 3 O 4 at higher temperatures. The Fe-Ni alloy is the active phase while Fe partially segregates from the alloy forming FeO x during dry reforming. This is beneficial as it reduces the surface carbon accumulation through interaction with FeO x lattice oxygen, producing CO. Alternate CH 4 and CO 2 pulse experiments over Ni, Fe, and Ni-Fe samples showed that dry reforming over Fe-Ni catalysts can follow a Mars–van Krevelen mechanism. A molar Fe/Ni ratio of 0.7 provides the most active and least deactivated catalyst. All studied catalysts can be regenerated by CO 2 carbon removal.
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Cites
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Dry reforming of methane over nickel catalysts supported on magnesium aluminate spinels
Guo, J., Lou, H., Zhao, H., Chai, D., & Zheng, X. (2004) · Applied Catalysis A: General · doi:10.1016/j.apcata.2004.06.014 · Cited by 699
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Cited by
Super-dry reforming of methane intensifies CO 2 utilization via Le Chatelier’s principle
Buelens, L. C., Galvita, V. V., Poelman, H., Detavernier, C., & Marin, G. B. (2016) · Science · doi:10.1126/science.aah7161 · Cited by 528
Self-citationTian, X., Wang, Y., Zeng, Z., Dai, L., Xu, J., Cobb, K., Ke, L., Zou, R., Liu, Y., & Ruan, R. (2022) · Green Chemistry · doi:10.1039/d1gc04537g · Cited by 128
Metadata
- Authors
- Theofanidis, S. A., Galvita, V. V., Poelman, H., & Marin, G. B.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-04-16
- Volume
- 5
- Issue
- 5
- Pages
- 3028-3039
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2074440069
- Cited by
- 508
- References
- 31
- FWCI
- 12.75
- Type
- journal article
- Language
- en
- Open access
- closed
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