Hydrogen Production Through Hydrocarbon Fuel Reforming Processes over Ni Based Catalysts Full article
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Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2019, Volume: 323, Pages: 166-182 Pages count : 17 DOI: 10.1016/j.cattod.2018.06.035 | ||||
| Tags | Hydrogen; Hydrocarbon fuel; Reforming; Ni catalyst; Metal-support interaction | ||||
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0004 |
Abstract:
Hydrogen production through autothermal reforming (ATR) of hydrocarbon fuels (ethanol, methane) over Ni-based catalysts was studied with a special focus on the role of metal-support interaction. The strength of Ni-support interaction was regulated by means of tailored modification of cerium oxide and aluminum oxide supports. The electronic, redox and structural properties of pre- and post-reaction Ni/Ce1-xMxOy and Ni/Ce1-xMxOy/Al2O3 (M = Zr, Gd, La, Mg) catalysts were studied in detail by TG-DTA, BET, XRD, HRTEM-EDX, HAADF-STEM, TPR, XPS and UV–vis DRS methods. It was found that the mode of Ni-support interaction controls the state, dispersion, and reducibility of Ni active component, and consequently, catalyst performance in ATR of hydrocarbon fuels. Among the tested modifiers (M = Zr, Gd, La, Mg), La has a more pronounced positive effect on the state and functionality of Ni/Ce1-xMxOy and Ni/Ce1-xMxOy/Al2O3 catalysts. The introduction of La as a modifier in the support composition enhances the metal-support interaction, which leads to a diminution of Nin+ reducibility. On the other hand, the improvement of the Ni dispersion and catalyst stability under the ATR reactions is achieved. The addition of a Pd-promoter makes it possible to optimize the reducibility of Nin+ strongly interacting with the support and provides the ability of Ni catalysts to the self-activation. The optimal support composition for Ni nanoparticles was designed that provides hydrogen yields which are close to the thermodynamic equilibrium values: ∼55% (Ce0.8La0.2O1.9, АTP C2H5OH at 600 C) and ∼65% (30Ce0.2Zr0.2La0.6O1.7/Al2O3, АTP CH4 at 850 C).
Cite:
Ismagilov Z.R.
, Matus E.V.
, Ismagilov I.Z.
, Sukhova O.B.
, Yashnik S.A.
, Ushakov V.A.
, Kerzhentsev M.A.
Hydrogen Production Through Hydrocarbon Fuel Reforming Processes over Ni Based Catalysts
Catalysis Today. 2019. V.323. P.166-182. DOI: 10.1016/j.cattod.2018.06.035 WOS Scopus РИНЦ ANCAN OpenAlex
Hydrogen Production Through Hydrocarbon Fuel Reforming Processes over Ni Based Catalysts
Catalysis Today. 2019. V.323. P.166-182. DOI: 10.1016/j.cattod.2018.06.035 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Mar 8, 2018 |
| Accepted: | Jun 18, 2018 |
| Published online: | Jun 20, 2018 |
| Published print: | Feb 15, 2019 |
Identifiers:
| Web of science: | WOS:000453555200020 |
| Scopus: | 2-s2.0-85048948664 |
| Elibrary: | 35745009 |
| Chemical Abstracts: | 2018:1227260 |
| Chemical Abstracts (print): | 170:66971 |
| OpenAlex: | W2809068101 |