Active Surface Formation and Catalytic Activity of Phosphorous-Promoted Electrolytic Silver in the Selective Oxidation of Ethylene Glycol to Glyoxal Full article
Journal |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
||||
---|---|---|---|---|---|
Output data | Year: 2008, Volume: 344, Number: 1-2, Pages: 142-149 Pages count : 8 DOI: 10.1016/j.apcata.2008.04.007 | ||||
Tags | Active surface formation, Electrolytic silver catalyst, Ethylene glycol oxidation, Glyoxal, Phosphorous-containing promoter | ||||
Authors |
|
||||
Affiliations |
|
Funding (1)
1 | Council for Grants of the President of the Russian Federation | МД-968.2007.3 |
Abstract:
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.
Cite:
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
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
Dates:
Submitted: | Dec 19, 2007 |
Accepted: | Apr 10, 2008 |
Published online: | Apr 18, 2008 |
Published print: | Jul 15, 2008 |
Identifiers:
Web of science | WOS:000257904900017 |
Scopus | 2-s2.0-44649148930 |
Elibrary | 13596549 |
Chemical Abstracts | 2008:687424 |
Chemical Abstracts (print) | 149:203000 |
OpenAlex | W2059579659 |