In situ Controlled Promotion of Catalyst Surfaces via NEMCA: The Effect of Na on the Pt-Catalyzed NO Reduction by H2 Научная публикация
Журнал |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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Вых. Данные | Год: 1997, Том: 166, Номер: 2, Страницы: 218-228 Страниц : 11 DOI: 10.1006/jcat.1997.1551 | ||||||||
Ключевые слова | FARADAIC ELECTROCHEMICAL MODIFICATION; WORK FUNCTION; OXIDATION; ETHYLENE; PLATINUM; ELECTROLYTE; PT(100); CELL; TPD | ||||||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | General Secretariat for Research and Technology |
Реферат:
It was found that the catalytic activity and selectivity of Pt for NO reduction by H2can be markedly and reversibly affected by depositing polycrystalline Pt films on β′′-Al2O3, a Na+conductor, and applying external currents or potentials to supply or remove Na to or from the Pt catalyst surface. The increase in the rate of NO reduction to N2is typically 103–105times larger than the rate of supply of Na and up to 30 times larger than the umpromoted rate. The use of the β′′-Al2O3support permits precisein situcontrol of the Na coverage on the Pt surface. Sodium coverages of 0.06 cause up to 1450% increases in the total rate of NO reduction and enhance the selectivity to N2from 30 to 75%. The promotional effect of Na is due to enhanced NO chemisorption and dissociation on the Pt surface.
Библиографическая ссылка:
Marina O.A.
, Yentekakis I.V.
, Vayenas C.G.
, Palermo A.
, Lambert R.M.
In situ Controlled Promotion of Catalyst Surfaces via NEMCA: The Effect of Na on the Pt-Catalyzed NO Reduction by H2
Journal of Catalysis. 1997. V.166. N2. P.218-228. DOI: 10.1006/jcat.1997.1551 WOS Scopus РИНЦ
In situ Controlled Promotion of Catalyst Surfaces via NEMCA: The Effect of Na on the Pt-Catalyzed NO Reduction by H2
Journal of Catalysis. 1997. V.166. N2. P.218-228. DOI: 10.1006/jcat.1997.1551 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 17 апр. 1996 г. |
Принята к публикации: | 2 дек. 1996 г. |
Опубликована в печати: | 1 мар. 1997 г. |
Опубликована online: | 25 мая 2002 г. |
Идентификаторы БД:
Web of science | WOS:A1997WL61200009 |
Scopus | 2-s2.0-0000972652 |
РИНЦ | 13265392 |
Chemical Abstracts | 1997:165445 |
Chemical Abstracts (print) | 126:309708 |
OpenAlex | W2135332734 |