Effects of potassium promotion on the activity and selectivity of iron Fischer-Tropsch catalysts

Journal Article · Fri Dec 31 23:00:00 EST 1982 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i200020a017· OSTI ID:5826481

Arakawa, H; Bell, A T

A systematic study has been carried out of the effects of potassium promotion on the performance of alumina supported iron catalysts for Fischer-Tropsch synthesis. The results show that potassium promotion causes a decrease in Fe dispersion, an increase in the strength of CO chemisorption on reduced Fe, a decrease in the turnover frequency for total CO consumption, an increase in the average molecular weight and olefi to paraffin ratio of the products, and an increase in the water-gas-shift activity. The addition of potassium is also found to increase the rate of catalyst carburization. This process occurs more rapidly in a mixture of CO and H/sub 2/ than in CO alone.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, and Department of Chemical Engineering, University of California, Berkeley, California 94720
• OSTI ID: 5826481
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 22:1; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKALI METALS
ALKANES
ALKENES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBURIZATION
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
ELEMENTS
FISCHER-TROPSCH SYNTHESIS
HARDENING
HYDROCARBONS
HYDROGEN
IRON
METALS
MOLECULAR WEIGHT
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARAFFIN
POTASSIUM
SEPARATION PROCESSES
SORPTION
SURFACE HARDENING
SURFACE TREATMENTS
TRANSITION ELEMENTS
WAXES