Intermetallic hydrides [TiFe0.95Zr0.03Mo0.02]Hx (0 ≤ x ≤ 2): The nature of the phase responsible for the selective reduction of CO2 Научная публикация
Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Вых. Данные | Год: 2003, Том: 44, Номер: 2, Страницы: 165-174 Страниц : 10 DOI: 10.1023/A:1023392126234 | ||||||||||||
Ключевые слова | Hydrogen; Spectroscopy; Titanium; Solid Solution; Signal Intensity | ||||||||||||
Авторы |
|
||||||||||||
Организации |
|
Информация о финансировании (1)
1 | North Atlantic Treaty Organization | ENVIR.LG 971292 |
Реферат:
Based on data obtained by X-ray diffraction and Mössbauer spectroscopy, it was concluded that tetragonal distortions appeared in the structure of cubic TiFe upon doping with Zr and Mo atoms and the intermetallide TiFe0.95Zr0.03Mo0.02 is formed, which can absorb ∼1 mol of H2 per mole of the intermetallide. The heating of the hydrogen-saturated intermetallide in Ar to 185°C released ∼0.80–0.82 mol of H2 per mole of the intermetallide. This hydrogen was the constituent of cubic [TiFe0.95Zr0.03Mo0.02]H1.93 and orthorhombic [TiFe0.95Zr0.03Mo0.02]H, which are the hydride phases of the parent [TiFe0.95Zr0.03Mo0.02]H2 hydride. The remainder of the hydrogen (∼0.18 mol per mole of the intermetallide), which was released only at 700–920°C, entered the γ solution of nonstoichiometric TiH2 – x. EXAFS and XANES data indicate an increase in the signal intensity in the Ti–Ti direction and a decrease in electron density on titanium atoms for [TiFe0.95Zr0.03Mo0.02]H0.36. These results were interpreted in terms of a scheme according to which hydrogen atoms in an interstitial solid solution are arranged closer to titanium atoms and coordinated to them. It was found that a phase of [TiFe0.95Zr0.03Mo0.02]H0.36, which is a constituent of the γ solution, is responsible for the selective reduction of CO2 to CO (90–98%).
Библиографическая ссылка:
Kochubey D.I.
, Kriventsov V.V.
, Maksimov Y.V.
, Tsodikov M.V.
, Yandieva F.A.
, Mordovin V.P.
, Navio J.
, Moiseev I.I.
Intermetallic hydrides [TiFe0.95Zr0.03Mo0.02]Hx (0 ≤ x ≤ 2): The nature of the phase responsible for the selective reduction of CO2
Kinetics and Catalysis. 2003. V.44. N2. P.165-174. DOI: 10.1023/A:1023392126234 WOS Scopus РИНЦ
Intermetallic hydrides [TiFe0.95Zr0.03Mo0.02]Hx (0 ≤ x ≤ 2): The nature of the phase responsible for the selective reduction of CO2
Kinetics and Catalysis. 2003. V.44. N2. P.165-174. DOI: 10.1023/A:1023392126234 WOS Scopus РИНЦ
Оригинальная версия:
Кочубей Д.И.
, Кривенцов В.В.
, Максимов Ю.В.
, Цодиков М.В.
, Яндиева Ф.А.
, Мордовин В.П.
, Навио Х.А.
, Моисеев И.И.
Гидриды на основе интерметаллида [TiFe0.95Zr0.03Mo0.02]Hx (0 < х < 2). Природа фазы, ответственной за селективное восстановление СO2
Кинетика и катализ. 2003. Т.44. №2. С.179-189. РИНЦ
Гидриды на основе интерметаллида [TiFe0.95Zr0.03Mo0.02]Hx (0 < х < 2). Природа фазы, ответственной за селективное восстановление СO2
Кинетика и катализ. 2003. Т.44. №2. С.179-189. РИНЦ
Даты:
Поступила в редакцию: | 25 окт. 2002 г. |
Опубликована в печати: | 1 мар. 2003 г. |
Идентификаторы БД:
Web of science | WOS:000182774300002 |
Scopus | 2-s2.0-0037832721 |
РИНЦ | 13441190 |
Chemical Abstracts | 2003:290158 |
Chemical Abstracts (print) | 139:58636 |
OpenAlex | W330516733 |