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Active Surface Formation and Catalytic Activity of Phosphorous-Promoted Electrolytic Silver in the Selective Oxidation of Ethylene Glycol to Glyoxal Научная публикация

Общее Язык: Английский, Жанр: Статья (Full article),
Статус опубликования: Опубликована, Оригинальность: Оригинальная
Журнал Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875
Вых. Данные Год: 2008, Том: 344, Номер: 1-2, Страницы: 142-149 Страниц : 8 DOI: 10.1016/j.apcata.2008.04.007
Ключевые слова Active surface formation, Electrolytic silver catalyst, Ethylene glycol oxidation, Glyoxal, Phosphorous-containing promoter
Авторы Magaev O.V. 1 , Knyazev A.S. 1 , Vodyankina O.V. 1 , Dorofeeva N.V. 1 , Salanov A.N. 2 , Boronin A.I. 2
Организации
1 Tomsk State University, Chemical, 36 Lenin Str., 634050 Tomsk, Russia
2 G.K. Boreskov Institute of Catalysis SB RAS, 5 Lavrent’eva pr., 630090 Novosibirsk, Russia

Информация о финансировании (1)

1 Совет по грантам Президента Российской Федерации МД-968.2007.3

Реферат: Unpromoted and phosphorus-promoted electrolytic silver catalysts have been investigated in the partial oxidation of ethylene glycol (EG). It was shown that the addition of the phosphorus-containing promoter on the surface of electrolytic Ag catalyst led to 15–20% increase in glyoxal (GO) yield. The formation mechanism of the active P-containing surfaces of silver catalyst as well as polycrystalline Ag foil has been studied by means of X-ray photoelectron spectroscopy (XPS), temperature-programmed desorption (TPD) and scanning electron microscopy (SEM) methods. It was shown that silver clusters located nearby the P-containing Ag surface participate in the ethylene glycol oxidation into glyoxal. The rise of glyoxal selectivity is explained by the absence of low temperature peak at 250 °C in TPD spectra of both P-promoted Ag foil and electrolytic Ag catalysts. This peak was assigned to the decomposition of surface oxide-like species (Ag2sO) responsible for deep oxidation of ethylene glycol.
Библиографическая ссылка: Magaev O.V. , Knyazev A.S. , Vodyankina O.V. , Dorofeeva N.V. , Salanov A.N. , Boronin A.I.
Active Surface Formation and Catalytic Activity of Phosphorous-Promoted Electrolytic Silver in the Selective Oxidation of Ethylene Glycol to Glyoxal
Applied Catalysis A: General. 2008. V.344. N1-2. P.142-149. DOI: 10.1016/j.apcata.2008.04.007 WOS Scopus РИНЦ
Даты:
Поступила в редакцию: 19 дек. 2007 г.
Принята к публикации: 10 апр. 2008 г.
Опубликована online: 18 апр. 2008 г.
Опубликована в печати: 15 июл. 2008 г.
Идентификаторы:
Web of science WOS:000257904900017
Scopus 2-s2.0-44649148930
РИНЦ 13596549
Chemical Abstracts 2008:687424
Chemical Abstracts (print) 149:203000
Альметрики: