Interaction of Hydrogen with Copper-Containing Oxide Catalysts: V. Structural Transformations in Copper Chromite During Reduction-Reoxidation Full article
Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Output data | Year: 2001, Volume: 42, Number: 1, Pages: 126-131 Pages count : 6 DOI: 10.1023/A:1004869200804 | ||
Tags | Phase Transition; Powder Diffraction; Chromite; Structural Transformation; Copper Oxide | ||
Authors |
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Affiliations |
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Funding (3)
1 | Netherlands Organisation for Scientific Research | 047.005.03.96 |
2 | Russian Foundation for Basic Research | 96-03-33887 |
3 | Russian Foundation for Basic Research | 96-03-33087 |
Abstract:
High-precision X-ray powder diffraction and differential dissolution methods are used to show that copper chromite with a structure of tetragonal spinel is recovered under certain conditions upon the reoxidation of the system of phases formed by the reduction of the initial copper chromite, cation-deficient spinel stabilized by hydrogen and Cu0 particles epitaxially bound to its surface at 250–350°C. However, because of destruction of the initial surface layer at the initial moment of reduction, equilibrium cannot be complete: reoxidized spinel is nonstoichiometric and contains some lattice oxygen-bound protons, and the copper oxide is formed on the surface in some amount. The difference in the phase transition of copper chromite during reduction–reoxidation from the reversible polymorphic transitions characteristic of copper chromite during temperature variations is analyzed.
Cite:
Plyasova L.M.
, Molina I.Y.
, Krieger T.A.
, Davydova L.P.
, Malakhov V.V.
, Dovlitova L.S.
, Yurieva T.M.
Interaction of Hydrogen with Copper-Containing Oxide Catalysts: V. Structural Transformations in Copper Chromite During Reduction-Reoxidation
Kinetics and Catalysis. 2001. V.42. N1. P.126-131. DOI: 10.1023/A:1004869200804 WOS Scopus РИНЦ
Interaction of Hydrogen with Copper-Containing Oxide Catalysts: V. Structural Transformations in Copper Chromite During Reduction-Reoxidation
Kinetics and Catalysis. 2001. V.42. N1. P.126-131. DOI: 10.1023/A:1004869200804 WOS Scopus РИНЦ
Original:
Плясова Л.М.
, Молина И.Ю.
, Кригер Т.А.
, Давыдова Л.П.
, Малахов В.В.
, Довлитова Л.С.
, Юрьева Т.М.
Характер взаимодействия водорода с оксидными медьсодержащими катализаторами. V. Структурные превращения в хромите меди при восстановлении - реокислении
Кинетика и катализ. 2001. Т.42. №1. С.139-144. РИНЦ
Характер взаимодействия водорода с оксидными медьсодержащими катализаторами. V. Структурные превращения в хромите меди при восстановлении - реокислении
Кинетика и катализ. 2001. Т.42. №1. С.139-144. РИНЦ
Dates:
Submitted: | Sep 20, 1999 |
Published print: | Jan 1, 2001 |
Identifiers:
Web of science | WOS:000167426200016 |
Scopus | 2-s2.0-0038578115 |
Elibrary | 13383004 |
Chemical Abstracts | 2001:204708 |
Chemical Abstracts (print) | 134:213290 |
OpenAlex | W299482104 |