Sol–Gel Synthesis and Characterization of the Binary Ni–Mg–O Oxide System Full article
| Journal |
Journal of Sol-Gel Science and Technology
ISSN: 0928-0707 , E-ISSN: 1573-4846 |
||||
|---|---|---|---|---|---|
| Output data | Year: 2019, Volume: 92, Number: 1, Pages: 208–214 Pages count : 7 DOI: 10.1007/s10971-019-05076-2 | ||||
| Tags | nanostructured MgO; doping; nickel oxide; characterization; reducibility | ||||
| Authors |
|
||||
| Affiliations |
|
Funding (2)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0014 |
| 2 | Federal Agency for Scientific Organizations | 0303-2016-0002 |
Abstract:
In this work, the binary Ni–Mg–O oxide system was prepared by means of a sol–gel technique, which provides high dispersity and uniform distribution of the nickel species within the MgO matrix. The samples were characterized by a scanning electron microscopy, a low-temperature nitrogen adsorption, and X-ray diffraction analysis. The reducibility of the prepared samples was tested in the reduction/oxidation cycles, thus modeling the conditions of a chemical looping. It was found that during the preparation procedure, a partial substitution of Mg2+ ions with Ni2+ ions resulting in formation of solid solution takes place. Reduction of the as-prepared sample in a temperature-programmed regime with heating up to 700 °C leads to decomposition of the solid solution and formation of dispersed particles of metallic nickel of 7 nm in size finely distributed within the MgO matrix. Subsequent oxidation transforms Ni0 species into NiO nanoparticles. Starting from the second reduction/oxidation cycle, the binary Ni–Mg–O system shows the reproducible behavior, and thus can be considered as a chemical looping agent.
Cite:
Karnaukhov T.M.
, Vedyagin A.A.
, Cherepanova S.V.
, Rogov V.A.
, Mishakov I.V.
Sol–Gel Synthesis and Characterization of the Binary Ni–Mg–O Oxide System
Journal of Sol-Gel Science and Technology. 2019. V.92. N1. P.208–214. DOI: 10.1007/s10971-019-05076-2 WOS Scopus РИНЦ ANCAN OpenAlex
Sol–Gel Synthesis and Characterization of the Binary Ni–Mg–O Oxide System
Journal of Sol-Gel Science and Technology. 2019. V.92. N1. P.208–214. DOI: 10.1007/s10971-019-05076-2 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Feb 18, 2019 |
| Accepted: | Jul 9, 2019 |
| Published online: | Jul 16, 2019 |
| Published print: | Oct 15, 2019 |
Identifiers:
| Web of science: | WOS:000483728100020 |
| Scopus: | 2-s2.0-85068998591 |
| Elibrary: | 41612711 |
| Chemical Abstracts: | 2019:1385860 |
| Chemical Abstracts (print): | 172:478609 |
| OpenAlex: | W2960920386 |