The State of Absorbed Hydrogen in the Structure of Reduced Copper Chromite from the Vibration Spectra Научная публикация
Журнал |
PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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Вых. Данные | Год: 2009, Том: 11, Номер: 29, Страницы: 6090-6097 Страниц : 8 DOI: 10.1039/b821381j | ||||||
Ключевые слова | CONTAINING OXIDE CATALYSTS; INELASTIC NEUTRON; MIXED OXIDES; ACETONE; ISOPROPANOL; CHARACTER; MIXTURES; METHANOL; STORAGE; Cu | ||||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | Региональный общественный Фонд содействия отечественной науке |
Реферат:
The reduction of copper chromite, CuCr(2)O(4), is followed by means of thermogravimetric analysis. The reduced state is studied by means of FT IR spectroscopy, Raman spectroscopy and inelastic neutron scattering. The reduction of copper occurs in two stages: absorption of hydrogen at 250-400 degrees C and dehydration of the reduced state at above 450 degrees C. The measured vibrational spectra prove that a considerable amount of hydrogen is absorbed by the oxide structure with absorbed protons stabilized in OH and HOH-groups (geminal protons). Three groups of vibration bands are observed in the INS spectra, which can be assigned to stretching, bending and libration vibrations. An increase in the reduction temperature of copper chromite results in softening of the stretching and hardening of the bending vibrations, what can be related to the strengthening of hydrogen bonding.
Библиографическая ссылка:
Khassin A.A.
, Kustova G.N.
, Jobic H.
, Yurieva T.M.
, Chesalov Y.A.
, Filonenko G.A.
, Plyasova L.M.
, Parmon V.N.
The State of Absorbed Hydrogen in the Structure of Reduced Copper Chromite from the Vibration Spectra
PCCP: Physical Chemistry Chemical Physics. 2009. V.11. N29. P.6090-6097. DOI: 10.1039/b821381j WOS Scopus РИНЦ
The State of Absorbed Hydrogen in the Structure of Reduced Copper Chromite from the Vibration Spectra
PCCP: Physical Chemistry Chemical Physics. 2009. V.11. N29. P.6090-6097. DOI: 10.1039/b821381j WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 28 нояб. 2008 г. |
Принята к публикации: | 8 апр. 2009 г. |
Опубликована online: | 13 мая 2009 г. |
Идентификаторы БД:
Web of science | WOS:000268034000009 |
Scopus | 2-s2.0-77951297377 |
РИНЦ | 16967233 |
Chemical Abstracts | 2009:854528 |
Chemical Abstracts (print) | 151:345486 |
PMID (PubMed) | 19606318 |
OpenAlex | W2062537839 |