Carbonate formation and decomposition on atomic oxygen precovered Au(111)

Autor:	Ming Pan, Rotimi A. Ojifinni, Jinlong Gong, Nathan S. Froemming, C. Buddie Mullins, Graeme Henkelman, David W. Flaherty
Rok vydání:	2008
Předmět:	Inorganic chemistry Analytical chemistry chemistry.chemical_element General Chemistry Activation energy Biochemistry Oxygen Decomposition Catalysis chemistry.chemical_compound Colloid and Surface Chemistry chemistry Desorption Atomic oxygen Carbonate Density functional theory
Zdroj:	Journal of the American Chemical Society. 130(34)
ISSN:	1520-5126
Popis:	Experimental results supported by density functional theory calculations show carbonate formation and reaction on atomic oxygen precovered Au(111). Oxygen mixing is observed in temperature-programmed desorption measurements when a Au(111) precovered with 16O is exposed to isotopically labeled CO2 (C18O2). The presence of 16O18O is attributed to surface carbonate formation and decomposition at surface temperatures ranging from 77-400 K and initial oxygen coverages ranging from 0.18-2.1 ML. A reaction probability on the order of 10(-4) and an activation energy of -0.15+/- 0.08 eV are estimated for this reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17d52d62ee8e02bc1f42b1fd05f4facb https://pubmed.ncbi.nlm.nih.gov/18680248 Zobrazit plný text záznamu