Effect of preparation methods on the catalytic properties of zeolite-supported ruthenium in the Fischer-Tropsch synthesis
Three preparation techniques (incipient wetness using a solution of ruthenium chloride (RuCl/sub 3/), vapor impregnation by the ruthenium carbonyl (Ru/sub 3/(CO)/sub 12/), and ion exchange with Ru(NH/sub 3/)/sub 6/Cl/sub 3/) have been used to prepare sodium (Na)Y zeolite-supported ruthenium catalysts. The effect of these preparation methods on the activity and product selectivity of the Ru catalysts in the Fischer-Tropsch synthesis was examined at temperatures in the range of 220 to 320/sup 0/C, a pressure of 1 atm, a CO/H/sub 2/ ratio of 1, and flow rates in the range GHSV = 1800 to 3600 h/sup -1/. It was found that there is a good inverse correlation of turnover numbers for CO conversion to the CO/H adsorption ratio, suggesting that the relative availability of adsorbed H/sub 2/ and CO determines catalyst activity during reaction. Selectivity in the Fischer-Tropsch synthesis was greatly influenced by the preparation method and metal loading. Catalysts prepared by incipient wetness produced mainly methane. Catalysts prepared by vapor impregnation had the best selectivities for higher hydrocarbons and olefins even though they had the smallest average Ru particle sizes. The observed changes in adsorption, activity, and selectivity with preparation method appear to result from differences produced in metal location in/on the zeolite, metal particle size, and zeolite-metal interactions. 12 figures, 2 tables.
- Research Organization:
- Univ. of Pittsburgh, PA
- DOE Contract Number:
- FG22-81PC40774
- OSTI ID:
- 5597125
- Journal Information:
- J. Catal.; (United States), Vol. 83:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALKENES
SYNTHESIS
CARBON MONOXIDE
CHEMISORPTION
METHANATION
FISCHER-TROPSCH SYNTHESIS
CATALYSTS
HYDROGEN
METHANE
RUTHENIUM
ABSORPTION SPECTRA
CATALYTIC EFFECTS
CHEMICAL PREPARATION
INFRARED SPECTRA
SORPTIVE PROPERTIES
RUTHENIUM CHLORIDES
ADSORPTION
DECOMPOSITION
ZEOLITES
CALCINATION
AMMINES
AQUEOUS SOLUTIONS
CARBONYLS
CATALYST SUPPORTS
CHEMICAL VAPOR DEPOSITION
COMPARATIVE EVALUATIONS
DRYING
EXPERIMENTAL DATA
FLOW RATE
HIGH TEMPERATURE
HIGH VACUUM
HYDRATES
HYDROCHLORIC ACID
ION EXCHANGE
MEDIUM TEMPERATURE
MIXING
PARTICLE SIZE
PRESSURE DEPENDENCE
SODIUM OXIDES
SPECIFICITY
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
ALKALI METAL COMPOUNDS
ALKANES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DATA
DEPOSITION
DISPERSIONS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
MINERALS
MIXTURES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PYROLYSIS
RUTHENIUM COMPOUNDS
SEPARATION PROCESSES
SIZE
SODIUM COMPOUNDS
SOLUTIONS
SORPTION
SPECTRA
SURFACE COATING
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)