Modification of silver surface with palladium and chlorine and its effect on the reaction of firmly adsorbed oxygen with ethene

Pulse chromatography revealed the reduced reactivity and enhanced selectivity of silver-chemisorbed oxygen in ethene oxidation in the presence of Pd0 and Cl-. The enhanced selectivity was found for both adsorbed and absorbed oxygen forms (OI and OII, respectively). The reduced reactivity is attributed to a high OI-Ag surface bond energy hindering the formation of an intermediate complex involved in partial and complete oxidation of ethene. The selectivity is enhanced because the centers adjacent to this complex are blocked by modifier species, thus preventing chemisorbed fragments from oxidizing into CO2 and water.

Авторы
Pavlova L.F. 1 , Retamoso Rocas M. , Tarasova V.E. 1 , Yagodovskii V.D. 1
Редакторы
-
Издательство
-
Номер выпуска
3
Язык
Английский
Страницы
504-507
Статус
Опубликовано
Подразделение
-
DOI
-
Номер
-
Том
77
Год
2003
Организации
  • 1 Peoples Friendship University, ul. Miklukho-Maklaya 6, Moscow 117198, Russian Federation
Ключевые слова
carbon dioxide; chlorine; ethylene; oxygen; palladium; silver; water; absorption; adsorption; analytical parameters; article; chemical bond; chemical modification; chemical parameters; chemical reaction; chemoreactivity; complex formation; energy; oxidation; surface property
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/78/