An infrared study of surface properties of metal oxides I. The interaction of ammonia with the surface of Cr2O3

Autor:	K. M. Kholyavenko, S.V. Gerei, V. A. Kuznetsov, Yu. V. Belokopytov
Rok vydání:	1976
Předmět:	Infrared Inorganic chemistry Infrared spectroscopy chemistry.chemical_element Photochemistry Oxygen Catalysis Metal Ammonia chemistry.chemical_compound Adsorption chemistry visual_art Desorption visual_art.visual_art_medium Physical and Theoretical Chemistry
Zdroj:	Journal of Catalysis. 44:1-4
ISSN:	0021-9517
DOI:	10.1016/0021-9517(76)90368-7
Popis:	Infrared spectra of Cr 2 O 3 taken before and after adsorption of NH 3 and at 20 °C are reported, as well as those registered on desorption at 20 °C and higher temperatures. It has been found that ammonia is chemisorbed on electron-acceptor centers both reversibly and irreversibly. Alongside this process, ammonia interacts with oxygen of the Cr 2 O 3 surface to give surface compounds involving the NO group. The formation of an NH 4 ion has not been detected.
Databáze:	OpenAIRE
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