The Interaction of Copper-Containing Spinels CuFe2O4 and CuFeCrO4 with Hydrogen Full article
| Journal |
Materials Research Bulletin
ISSN: 0025-5408 |
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| Output data | Year: 2019, Volume: 118, Article number : 110481, Pages count : 8 DOI: 10.1016/j.materresbull.2019.05.006 | ||||
| Tags | CuFe2O4, СuFeCrO4, H2 reduction, In situ XRD, In situ IRS | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | ГЗ-2017-2020 |
Abstract:
The interaction of hydrogen with copper-containing spinels CuFe2O4 and CuFeCrO4, which are the catalysts for hydrogenation, alkylation and other reactions, was studied. Copper ions of ferrite are reduced in a reductive atmosphere and segregated to the spinel Fe3O4 surface with the formation of Cu0 nanoparticles; their interaction with O2-contaning (less than 1 vol.%) helium leads to the oxidation to Cu2O or CuO. In a reductive medium, copper ferrite-chromite CuFeCrO4 segregates copper ions from spinel, which are reduced to Cu0 nanoparticles on the surface of CuFeCr-spinel. Charge compensation of spinel structure occurs due to formation of OH groups and
by the partial transition Fе3+ – Fe2+. Upon mild reoxidation, Cu0 atoms partially return into the spinel structure and partially form the Cu2O phase.
Cite:
Plyasova L.M.
, Kardash T.Y.
, Svintsitskiy D.A.
, Paukshtis E.A.
, Shtertser N.V.
, Minyukova T.P.
The Interaction of Copper-Containing Spinels CuFe2O4 and CuFeCrO4 with Hydrogen
Materials Research Bulletin. 2019. V.118. 110481 :1-8. DOI: 10.1016/j.materresbull.2019.05.006 WOS Scopus РИНЦ AN OpenAlex
The Interaction of Copper-Containing Spinels CuFe2O4 and CuFeCrO4 with Hydrogen
Materials Research Bulletin. 2019. V.118. 110481 :1-8. DOI: 10.1016/j.materresbull.2019.05.006 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Nov 23, 2018 |
| Accepted: | May 8, 2019 |
| Published online: | May 8, 2019 |
| Published print: | Oct 1, 2019 |
Identifiers:
| Web of science: | WOS:000480375000004 |
| Scopus: | 2-s2.0-85066053272 |
| Elibrary: | 41675420 |
| Chemical Abstracts: | 2019:1031209 |
| OpenAlex: | W2943921936 |