Effects of Preparation Mode and Doping on the Genesis and Properties of Ni/Ce1-xMxOy Nanocrystallites (M = Gd, La, Mg) for Catalytic Applications Full article
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Journal of Nanoparticle Research
ISSN: 1388-0764 , E-ISSN: 1572-896X |
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| Output data | Year: 2019, Volume: 21, Number: 1, Article number : 11, Pages count : 17 DOI: 10.1007/s11051-018-4454-5 | ||||
| Tags | Nanocrystallites; Doped ceria; Ni nanoparticles; Metal-support interaction; Catalyst; Sol–gel method | ||||
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0004 |
Abstract:
To create the catalytically active ceria-based nanocrystallites with the superior anti-sintering and anticoking behavior, the peculiarity of genesis and properties of Ni/Ce1-xMxOy nanocrystallites (M = Gd, La, Mg; x=0–0.5; 1.5 ≤ y ≤ 2.0) were studied by thermal analysis, N2 adsorption, X-ray diffraction, transmission, and scanning electron microscopy. The control of nanocrystallite characteristics was achieved by tuning of metal-support interaction through the application of different synthesis method (polymerizable complex method, sol–gel template method), doping, and conditions of thermal treatment (300-800 °C, oxidizing and reducing atmospheres). From undoped CeO2, the mesoporous nanosized Ce1-xMxOy solid solutions are distinguished by higher surface area (95 vs. 155 m2/g), smaller crystallite size (15 vs. 5 nm), and advanced thermal stability. The supported Ce1-xMxOy material Ni species of different dispersion and reducibility were prepared through regulation of composition and crystallite sizes of CexM1-xOy.The Ni dispersion increases upon a decrease of support crystallite sizes, with an increase of mole fraction of M and in the following row of doping cations: Gd ˂ Mg ˂ La. The presence of La or Mg in the nanocrystallite composition promotes the stability against sintering while small particle size provides the anti-coking resistance. The developed Ni/Ce1-xMxOy nanocrystallites were remarkable for their performance in autothermal conversion of ethanol and stability against carbonaceous deposits.
Cite:
Matus E.V.
, Okhlopkova L.B.
, Sukhova O.B.
, Ismagilov I.Z.
, Kerzhentsev M.A.
, Ismagilov Z.R.
Effects of Preparation Mode and Doping on the Genesis and Properties of Ni/Ce1-xMxOy Nanocrystallites (M = Gd, La, Mg) for Catalytic Applications
Journal of Nanoparticle Research. 2019. V.21. N1. 11 :1-17. DOI: 10.1007/s11051-018-4454-5 WOS Scopus РИНЦ AN OpenAlex
Effects of Preparation Mode and Doping on the Genesis and Properties of Ni/Ce1-xMxOy Nanocrystallites (M = Gd, La, Mg) for Catalytic Applications
Journal of Nanoparticle Research. 2019. V.21. N1. 11 :1-17. DOI: 10.1007/s11051-018-4454-5 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Oct 16, 2018 |
| Accepted: | Dec 20, 2018 |
| Published print: | Jan 1, 2019 |
| Published online: | Jan 5, 2019 |
Identifiers:
| Web of science: | WOS:000454941100001 |
| Scopus: | 2-s2.0-85059583326 |
| Elibrary: | 37658346 |
| Chemical Abstracts: | 2019:717562 |
| OpenAlex: | W2908387581 |