Structure Transformations of Copper Chromite Under Reduction–Reoxidation Conditions Full article
Conference |
Physical Methods for Catalytic Research at the Molecular Level: International memorial K.I. Zamaraev conference 28 Jun - 2 Jul 1999 , Novosibirsk |
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Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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Output data | Year: 2000, Volume: 158, Number: 1, Pages: 331-336 Pages count : 6 DOI: 10.1016/S1381-1169(00)00100-X | ||
Tags | Copper chromite, Hydrogen, Structure, X-ray powder diffraction | ||
Authors |
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Affiliations |
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Funding (1)
1 | Netherlands Organisation for Scientific Research | 047.005.03.96 |
Abstract:
Structure transformations accompanying reoxidation preliminary reduced at 270°C copper chromite were studied using X-ray powder diffraction method, and comparison of the structures of the initial and reoxidized copper chromite was carried out. Conditions under which cation-deficient spinel, stabilized with hydrogen and epitaxially bonded with its surface Cu0 particles (derived from reduction of copper chromite by hydrogen) forms copper chromite with the tetragonal spinel structure are revealed. It is shown that the reoxidized spinel is non-stoichiometric and possibly contains some amount of hydrogen in the form of protons bonded to the lattice oxygen. Differences of reversible phase transformation of copper chromite under reduction–reoxidation conditions from reversible polymorphism of copper chromite with temperature variations are analyzed.
Cite:
Plyasova L.M.
, Molina I.Y.
, Krieger T.A.
, Davydova L.P.
, Yurieva T.M.
Structure Transformations of Copper Chromite Under Reduction–Reoxidation Conditions
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.331-336. DOI: 10.1016/S1381-1169(00)00100-X WOS Scopus РИНЦ
Structure Transformations of Copper Chromite Under Reduction–Reoxidation Conditions
Journal of Molecular Catalysis A: Chemical. 2000. V.158. N1. P.331-336. DOI: 10.1016/S1381-1169(00)00100-X WOS Scopus РИНЦ
Dates:
Published online: | Jul 18, 2000 |
Published print: | Sep 8, 2000 |
Identifiers:
Web of science | WOS:000089201200043 |
Scopus | 2-s2.0-0034623048 |
Elibrary | 13360472 |
Chemical Abstracts | 2000:498704 |
Chemical Abstracts (print) | 133:199275 |
OpenAlex | W2060796421 |