Kinetic Isotope Study of the States of Oxygen Adsorbed on Silver Catalysts for Ethylene Epoxidation Научная публикация
Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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Вых. Данные | Год: 1996, Том: 37, Номер: 1, Страницы: 140-145 Страниц : 6 | ||
Ключевые слова | OXIDATION; ADSORPTION; MECHANISM; CARBON; CO2 | ||
Авторы |
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Организации |
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Реферат:
The formation of various oxygen states at the surface of silver catalysts for ethylene epoxidation was studied by the kinetic isotope method with the isotope oxygen-18. Relaxation of both chemical and isotope compositions of the reaction products was monitored. The difference between isotope compositions of ethylene oxide and carbon dioxide in time was found. Increases in the amount of exchangeable oxygen and in the relaxation time of the isotope composition of the reaction products with increasing dispersion and surface defectivity of silver particles was revealed. It was confirmed that two states of atomic adsorbed oxygen take part in epoxidation and deep oxidation of ethylene. The conclusion was drawn that electrophilic oxygen, which is responsible for ethylene epoxidation, is formed from the nucleophilic form (surface oxygen of silver oxide) via subsurface oxygen.
Библиографическая ссылка:
Bulushev D.A.
, Balʹzhinimaev B.S.
Kinetic Isotope Study of the States of Oxygen Adsorbed on Silver Catalysts for Ethylene Epoxidation
Kinetics and Catalysis. 1996. V.37. N1. P.140-145. WOS Scopus РИНЦ CAPlusCA
Kinetic Isotope Study of the States of Oxygen Adsorbed on Silver Catalysts for Ethylene Epoxidation
Kinetics and Catalysis. 1996. V.37. N1. P.140-145. WOS Scopus РИНЦ CAPlusCA
Оригинальная:
Булушев Д.А.
, Бальжинимаев Б.С.
Исследование состояний адсорбированного кислорода на серебряных катализаторах эпоксидирования этилена изотопно-кинетическим методом
Кинетика и катализ. 1996. Т.37. №1. С.149-154. РИНЦ
Исследование состояний адсорбированного кислорода на серебряных катализаторах эпоксидирования этилена изотопно-кинетическим методом
Кинетика и катализ. 1996. Т.37. №1. С.149-154. РИНЦ
Даты:
Поступила в редакцию: | 23 нояб. 1994 г. |
Идентификаторы БД:
Web of science: | WOS:A1996TY56500024 |
Scopus: | 2-s2.0-0347241960 |
РИНЦ: | 13249404 |
Chemical Abstracts: | 1996:149036 |
Chemical Abstracts (print): | 124:288587 |