Some catalytic exchange reactions with deuterium oxide on evaporated metal films

Autor:	H. F. Leach, W.G McNaught, Charles Kemball
Rok vydání:	1974
Předmět:	inorganic chemicals Hydrogen Inorganic chemistry Oxide chemistry.chemical_element Photochemistry Catalysis Propene Metal chemistry.chemical_compound Nickel chemistry Deuterium visual_art visual_art.visual_art_medium Physical and Theoretical Chemistry Platinum
Zdroj:	Journal of Catalysis. 34:98-105
ISSN:	0021-9517
DOI:	10.1016/0021-9517(74)90015-3
Popis:	Exchange reactions of hydrogen with deuterium oxide have been studied over metal films. The observed pattern of activity, which is Pt >2; Rh > Pd ⪢ Ni, is inversely related to the strength of adsorption of oxygen on the metals. Exchange reactions of propene with deuterium oxide have been studied on films of the same metals and on alumina-supported nickel. Severe poisoning occurred with platinum films but the other catalysts gave constant activity for the exchange which was predominantly stepwise. All hydrogen atoms in the olefin were replaced at similar rates, and the mechanism was thought to involve the reversible formation of adsorbed alkyl radicals. Similar results were found with ethylene and deuterium oxide on nickel films; both olefins showed some self-hydrogenation in addition to exchange on these films. Methane and propane did not exchange with deuterium oxide on nickel films but underwent reforming reactions at temperatures above 573 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d56ef4073319f3c5f433b4b452e5c6e https://doi.org/10.1016/0021-9517(74)90015-3 Zobrazit plný text záznamu