An infrared study of CO adsorption on reduced and oxidized Ru/SiO sub 2

Journal Article · Tue Oct 31 23:00:00 EST 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90245-5· OSTI ID:6816492

Yokomizo, G H; Louis, C; Bell, A T ^[1]

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1. Lawrence Berkeley Laboratory, CA (USA)

Three infrared bands are observed for CO adsorbed on Ru/SiO{sub 2}. The two highest frequency bands are assigned to the A{sub 1} and E stretching modes of tricarbonyl species. On a reduced sample, the tricarbonyl species are associated with Ru ions bonded directly to the support. Such structures are produced by corrosive chemisorption of CO on Ru crystallites (Ru{sub s} + 2 SiOH + 3 CO = (SiO){sub 2}Ru(CO){sub 3} + H{sub 2}). A separate set of tricarbonyl species is observed on partially oxidized samples of Ru/SiO{sub 2}. In this case, the partially oxidized sites occur on the surface of the Ru particles. The lowest frequency band is assigned to the C-O stretch of linearly adsorbed CO on Ru particles. Evidence is also found for linearly adsorbed CO on partially oxidized Ru sites. 42 refs.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6816492
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 120:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL REACTIONS
CHEMISORPTION
ELEMENTS
INFRARED SPECTRA
METALS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REFRACTORY METAL COMPOUNDS
RUTHENIUM
RUTHENIUM COMPOUNDS
RUTHENIUM OXIDES
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS