Comments on the use of carbon-13 tracer experiments to determine the role of surface carbon in catalytic reactions
Journal Article
·
· J. Catal.; (United States)
A layer of carbon-13 was deposited on a fresh ruthenium zeolite (RuY) catalyst. With the system volume at 55 cm/sup 3/ and the partial pressures of /sup 12/CO and water (H/sub 2/O) at 5 torr, reaction with surface carbon 13 (/sup 13/C) yielded both /sup 13/CO and /sup 13/CO/sub 2/ as significant fractions of the gas phase. The amount of /sup 13/C observed was an order of magnitude greater than the amount of carbon thought to be on the surface. These results may be understood if the reaction /sup 13/C + H/sub 2/O reversible /sup 13/CO + H/sub 2/ (hydrogen) occurs, followed by the displacement of CO from the surface: /sup 12/CO + /sup 13/CO/sub a/ reversible /sup 13/CO + /sup 12/CO/sub a/. The latter reaction is known to occur over rhodium catalysts at low temperatures. The exchange was confirmed over RuY using ir spectroscopy. 1 figure.
- OSTI ID:
- 5429393
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 74:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Essentially Molecular Metal Complexes Anchored to Zeolite: Synthesis and Characterization of Rhodium Complexes and Ruthenium Complexes Prepared from Rh(acac)(2-C2H4)2 and cis-Ru(acac)2( -C2H4)2
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Thu Dec 31 23:00:00 EST 2009
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OSTI ID:1020129
Related Subjects
090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400203 -- Isotope Exchange & Isotope Separation-- (-1987)
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CARBON 12
CARBON 13
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DEPOSITION
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPE APPLICATIONS
ISOTOPES
ISOTOPIC EXCHANGE
LIGHT NUCLEI
MATERIALS
METALS
METHANATION
MINERALS
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
RUTHENIUM
SHIFT PROCESSES
SORPTIVE PROPERTIES
SPECTRA
SPECTRAL SHIFT
STABLE ISOTOPES
SURFACE PROPERTIES
TRACER TECHNIQUES
TRANSITION ELEMENTS
WATER
ZEOLITES
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400203 -- Isotope Exchange & Isotope Separation-- (-1987)
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CARBON 12
CARBON 13
CARBON COMPOUNDS
CARBON ISOTOPES
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DEPOSITION
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOTOPE APPLICATIONS
ISOTOPES
ISOTOPIC EXCHANGE
LIGHT NUCLEI
MATERIALS
METALS
METHANATION
MINERALS
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
RUTHENIUM
SHIFT PROCESSES
SORPTIVE PROPERTIES
SPECTRA
SPECTRAL SHIFT
STABLE ISOTOPES
SURFACE PROPERTIES
TRACER TECHNIQUES
TRANSITION ELEMENTS
WATER
ZEOLITES