Effects of potassium and calcination pretreatment on the adsorption and chemical/physical properties of Fe/SiO/sub 2/
Journal Article
·
· J. Catal.; (United States)
OSTI ID:5522256
Studies of the effects of potassium on CO, CO/sub 2/, and hydrogen adsorptions on iron indicate that potassium promotion increases heats of adsorption of CO and H/sub 2/, enhances the rate of CO dissociation, increases CO saturation coverage, and decreases the CO sticking coefficient. The purpose of this work was to investigate the effects of potassium promoter and calcination of the stoichiometries and kinetics of CO, CO/sub 2/, and H/sub 2/ adsorptions on Fe/SiO/sub 2/ and to relate these effects to changes in the physical and chemical properties of the catalyst. The results reveal important differences in behavior for CO and H/sub 2/ adsorptions on precalcined Fe/SiO/sub 2/ and Fe/K/SiO/sub 2/ compared to the adsorptions on single crystal or polycrystalline iron, which may relate to changes in the surface and bulk properties of iron such as potassium coverage and extent of reduction. 33 references.
- Research Organization:
- Brigham Young Univ., Provo, UT
- DOE Contract Number:
- AC22-79ET14809
- OSTI ID:
- 5522256
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 100:2; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of calcination on adsorption and CO hydrogenation activity/selectivity of potassium-promoted Fe/SiO/sub 2/
Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Final technical progress report, September 19, 1979-October 22, 1984
Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Annual technical progress report, September 19, 1980-September 18, 1981
Conference
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:5771861
Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Final technical progress report, September 19, 1979-October 22, 1984
Technical Report
·
Sat Oct 20 00:00:00 EDT 1984
·
OSTI ID:6360245
Investigation of sulfur-tolerant catalysts for selective synthesis of hydrocarbon liquids from coal-derived gases. Annual technical progress report, September 19, 1980-September 18, 1981
Technical Report
·
Fri Oct 30 23:00:00 EST 1981
·
OSTI ID:5471537
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
ADSORPTION
ADSORPTION HEAT
ALKALI METALS
CALCINATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
DISSOCIATION
ELEMENTS
ENTHALPY
HYDROGEN
IRON
METALS
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM
PROMOTERS
PYROLYSIS
SCATTERING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SURFACE PROPERTIES
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
X-RAY DIFFRACTION
010408 -- Coal
Lignite
& Peat-- C1 Processes-- (1987-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORPTION
ADSORPTION HEAT
ALKALI METALS
CALCINATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
DISSOCIATION
ELEMENTS
ENTHALPY
HYDROGEN
IRON
METALS
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POTASSIUM
PROMOTERS
PYROLYSIS
SCATTERING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SURFACE PROPERTIES
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
X-RAY DIFFRACTION