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Mechanistic Features of Reduction of Copper Chromite and State of Absorbed Hydrogen in the Structure of Reduced Copper Chromite Review

Общее Language: Английский, Genre: Review,
Status: Published, Source type: Translated
Journal Russian Journal of General Chemistry
ISSN: 1070-3632 , E-ISSN: 1608-3350
Output data Year: 2008, Volume: 78, Number: 11, Pages: 2203-2213 Pages count : 11 DOI: 10.1134/S1070363208110418
Authors Khasin A.A. 1 , Yur'eva T.M. 1 , Plyasova L.M. 1 , Kustova G.N. 1 , Jobic H. 2 , Ivanov A. 3 , Chesalov Yu.A. 1 , Zaikovskii V.I. 1 , Khasin A.V. 1 , Davydova L.P. 1 , Parmon V.N. 1
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Lavrent’eva 5, Novosibirsk, 630090 Russia
2 Institute for Research in Catalysis and Environment, Lyon, France
3 Laue–Langevin Institute (ILL), Grenoble, France

Abstract: The review discusses the experimental data on the unusual mechanism of the reduction of copper cations from the copper chromite, CuCr2O4, structure. Treatment of copper chromite in hydrogen at 180–370oC is not accompanied by water formation but leads to absorption of hydrogen by the oxide structure with simultaneous formation of metallic copper as small flat particles which are epitaxially bound to the oxide. This process is due to the redox reaction Cu2+ + H2 → Cu0 + 2H+; the protons are stabilized in the oxide phase, which is confirmed by neutron diffraction studies. The reduced copper chromite which contains absorbed hydrogen in its oxidized state and the metallic copper particles epitaxially bound to the oxide phase structure exhibit catalytic activity in hydrogenation reactions.
Cite: Khasin A.A. , Yur'eva T.M. , Plyasova L.M. , Kustova G.N. , Jobic H. , Ivanov A. , Chesalov Y.A. , Zaikovskii V.I. , Khasin A.V. , Davydova L.P. , Parmon V.N.
Mechanistic Features of Reduction of Copper Chromite and State of Absorbed Hydrogen in the Structure of Reduced Copper Chromite
Russian Journal of General Chemistry. 2008. V.78. N11. P.2203-2213. DOI: 10.1134/S1070363208110418 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
ArticleLinkType.TRANSLATED_TO_ORIGINAL: Хасин А.А. , Юрьева Т.М. , Плясова Л.М. , Кустова Г.Н. , Жобик Э. , Иванов А. , Чесалов Ю.А. , Зайковский В.И. , Хасин А.В. , Давыдова Л.П. , Пармон В.Н.
Особенности механизма восстановления хромита меди и состояние абсорбированного водорода в структуре восстановленного хромита меди
Российский химический журнал. 2008. Т.52. №1. С.32-42. publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 20, 2007
Published print: Nov 1, 2008
Published online: Dec 23, 2008
Identifiers:
publication_identifier.wos_identifier_type WOS:000261959400041
publication_identifier.scopus_identifier_type 2-s2.0-59849084858
publication_identifier.rinz_identifier_type 13588342
publication_identifier.accession_number_identifier_type 2008:1523867
publication_identifier.chemical_accession_number_identifier_type 150:200221
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