Catalysis by supported clusters chemisorption, decomposition, and catalytic properties in Fischer-Tropsch (F-T) synthesis of Fe/sub 3/(CO)/sub 12/, (HFe/sub 3/(CO)/sub 11/)/sup -/, and (Fe(CO)/sub 5/) supported on highly divided oxides

Conference · Tue Jan 01 00:00:00 EST 1980 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:6319559

Hugues, F ^[1]; Commereuc, D; Bonneviot, L; Bussiere, P; Basset, J M; Chauvin, Y; Olivier, D

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1. Inst. Rech. Catal. C.N.R.S.

Catalysis by supported clusters: chemisorption, decomposition, and catalytic properties in Fischer-Tropsch (F-T) synthesis of Fe/sub 3/(CO)/sub 12/, (HFe/sub 3/(CO)/sub 11/)/sup -/, and F(CO)/sub 5/ supported on highly divided oxides, such as large-surface-area g- or ..gamma..-Al/sub 2/O/sub 3/, MgO, SiO/sub 2/, and La/sub 2/O/sub 3/, to 1-2 3< by wt Fe were studied by coupling activity and selectivity measurements in F-T tests with ferromagnetic resonance and Moessbauer spectroscopy of the catalysts and gas-phase analysis of the products of thermal decomposition of the supported carbonyls. In F-T synthesis at 533/sup 0/-543/sup 0/K, all the catalysts studied showed high selectivities for hydrocarbons (43-100%) and olefins (43-69%), with a sharp maximum, especially over Fe/sub 3/(CO)/sub 12//Al/sub 2/O/sub 3/, for C/sub 2/-C/sub 3/ olefins, but the catalytic activities were low. The high olefin selectivities were attributed to the presence of very small (< 15 A. dia) particles of superparamagnetic iron in a zero-valent oxidation state.

• OSTI ID: 6319559
• Report Number(s): CONF-800814-
• Journal Information: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 25:4; Conference: 180. American Chemical Society meeting/2. chemical congress of the North American Continent, Las Vegas, NV, USA, 24 Aug 1980
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBONYLS
PYROLYSIS
CATALYSTS
MAGNETIC RESONANCE
SPECIFICITY
FISCHER-TROPSCH SYNTHESIS
CHEMICAL REACTION YIELD
CATALYST SUPPORTS
CHEMICAL ANALYSIS
CHEMISORPTION
DECOMPOSITION
EXPERIMENTAL DATA
HIGH TEMPERATURE
MOESSBAUER SPECTROMETERS
OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
GAMMA SPECTROMETERS
INFORMATION
MEASURING INSTRUMENTS
NUMERICAL DATA
OXYGEN COMPOUNDS
RESONANCE
SEPARATION PROCESSES
SORPTION
SPECTROMETERS
THERMOCHEMICAL PROCESSES
YIELDS
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