Laser Vaporized CrOx/Al2O3 Nanopowders as a Catalyst for Isobutane Dehydrogenation Full article
| Journal |
Materials Characterization
ISSN: 1044-5803 |
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| Output data | Year: 2020, Volume: 169, Pages: 110664-110678 Pages count : 14 DOI: 10.1016/j.matchar.2020.110664 | ||||
| Tags | CrOx/Al2O3 catalysts, Nanopowder, CO2-laser vaporization, Isobutane dehydrogenation, Crn+ species | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 18-03-00087 |
| 2 | Russian Foundation for Basic Research | 19-32-60027 (АААА-А19-119110590010-0) |
| 3 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2017-2020 |
Abstract:
Laser vaporized xCr/Al2O3 nanopowders with the particle size of ca. 15 nm were studied by XRF, EDX, HRTEM,
XRD, DD, BET, TGA, UV–Vis DRS, Raman and PL spectroscopy methods as a catalytic system in dehydrogenation
of isobutane. The nanopowders were found to contain not only the Cr6+ ions located on the surface of nanoparticles, but also two different types of Cr3+ sites as components of the γ-Al2O3 solid solution. One type consists of the bulk Cr3+b sites in a strong crystal field. Another type is represented by the Cr3+s sites residing near the surface of xCr/Al2O3 nanoparticles. Such sites are in a weak crystal field. It was shown that catalytic activity of the nanostructured xCr/Al2O3 system is provided by the high content of surface Cr3+s sites. The results obtained make it possible to propose the nanopowders obtained by laser synthesis as a promising catalytic system that can be used in the development of highly active catalysts for dehydrogenation of alkanes with the decreased chromium content.
Cite:
Kostyukov A.I.
, Baronskiy M.G.
, Larina T.V.
, Snytnikov V.N.
, Zaitseva N.A.
, Pochtar A.A.
, Ishchenko A.V.
, Cherepanova S.V.
, Snytnikov V.N.
Laser Vaporized CrOx/Al2O3 Nanopowders as a Catalyst for Isobutane Dehydrogenation
Materials Characterization. 2020. V.169. P.110664-110678. DOI: 10.1016/j.matchar.2020.110664 WOS Scopus РИНЦ ANCAN OpenAlex
Laser Vaporized CrOx/Al2O3 Nanopowders as a Catalyst for Isobutane Dehydrogenation
Materials Characterization. 2020. V.169. P.110664-110678. DOI: 10.1016/j.matchar.2020.110664 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jul 7, 2020 |
| Accepted: | Sep 22, 2020 |
| Published online: | Sep 24, 2020 |
| Published print: | Nov 1, 2020 |
Identifiers:
| Web of science: | WOS:000584354000003 |
| Scopus: | 2-s2.0-85092001328 |
| Elibrary: | 45252016 |
| Chemical Abstracts: | 2020:2038763 |
| Chemical Abstracts (print): | 174:200000 |
| OpenAlex: | W3089154409 |