Isotopic tracer and NMR studies of carbonaceous species present during CO hydrogenation over Ru/TiO sub 2

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90175-9· OSTI ID:6844610

Yokomizo, G H; Bell, A T ^[1]

---

1. Univ. of California, Berkeley (USA)

Isotopic tracer and NMR experiments have revealed the presence of carbidic carbon atoms and alkyl groups on a Ru/TiO{sub 2} catalyst during CO hydrogenation. The carbidic carbon, which covers about 25% of the catalyst surface, is composed of two separate species, a methane precursor and a monomer building block for hydrocarbon chain growth. Modeling results indicate that both carbidic carbon species are formed directly from CO and that 80% of the carbidic carbon serves only as a monomer building block. The alkyl groups are divided into two separate species, C{prime}{sub {beta}} and C{double prime}{sub {beta}}. The C{prime}{sub {beta}} pool consists of the intermediates to C{sub 2+} hydrocarbon products, whereas the C{double prime}{sub {beta}} pool consists of longer alkyl chains which accumulate continuously during reaction and are believed to reside on the support. 34 refs.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6844610
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 119:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010408* -- Coal
Lignite
& Peat-- C1 Processes-- (1987-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKANES
CARBIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DEACTIVATION
DEPOSITION
ELEMENTS
HYDROCARBONS
HYDROGENATION
ISOTOPE APPLICATIONS
KINETICS
MAGNETIC RESONANCE
MATERIALS
MATHEMATICAL MODELS
METALS
METHANE
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
REACTION KINETICS
RESONANCE
RUTHENIUM
STRUCTURAL CHEMICAL ANALYSIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRACER TECHNIQUES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS