Cation promotion effects in zeolite-supported F-T catalysts. Eleventh quarterly report, March-May 1986. [C/sub 1/. -->. C/sub 6/]

Technical Report · Sun Jun 01 04:00:00 EDT 1986

OSTI ID:5667413

Goodwin, Jr, J G; Oukaci, R; Wu, C S

The main objectives of this study are: (1) to develop a better understanding of how neutralizing alkali cations in zeolites can affect F-T product selectivity over a supported metal; (2) to illuminate the effect of these cations on chemisorption properties, CO disproportionation, the mechanism of CO hydrogenation, and the deactivation characteristics; (3) to elaborate upon the effect of decreasing ionization potential of the alkali cations on the catalytic properties; and (4) to investigate the effects of Rb and Cs promotion. During this past quarter, the effect of Si/Al ratio on the possible secondary reactions during CO hydrogenation were investigated with different zeolites, RuNaX, RuNaY, RuKY, RuKL, and RuNa-mordenite. These catalysts were prepared by ion-exchange and characterized by the same procedures described in previous reports. NaX, NaY, KL, and Na-mordenite were used as catalysts in butene reactions in order to eliminate the effect of Ru on the transformation of olefins. These reactions were carried out under similar conditions as those of CO hydrogenation for the series of ion-exchanged zeolite-supported Ru catalysts. In order to understand the olefin reactions over the acid sites in the ion-exchanged Ru zeolites, H mordenite was chosen for study because it has the highest Si/Al ratio, hence the strongest acid sites. Deactivation of H-mordenite was studied in detail for the propylene and butene reactions. 5 refs., 5 tabs.

• Research Organization: Pittsburgh Univ., PA (USA). Dept. of Chemical and Petroleum Engineering
• DOE Contract Number: FG22-83PC60805
• OSTI ID: 5667413
• Report Number(s): DOE/PC/60805-T11; ON: DE86012952
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKALI METAL COMPOUNDS
ALKENES
ALUMINIUM
BUTENES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DATA
DEACTIVATION
ELEMENTS
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
HYDROCARBONS
HYDROGENATION
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
IONS
MATERIALS
METALS
MINERALS
MORDENITE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
PROMOTERS
PROPYLENE
QUANTITY RATIO
RESEARCH PROGRAMS
RUTHENIUM
SEMIMETALS
SILICATE MINERALS
SILICON
SPECIFICITY
SYNTHESIS
TRANSITION ELEMENTS
ZEOLITES