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

Abstract

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.

Authors:
;
Publication Date:
Research Org.:
Materials and Molecular Research Division, Lawrence Berkeley Laboratory, and Department of Chemical Engineering, University of California, Berkeley, California 94720
OSTI Identifier:
5826481
Resource Type:
Journal Article
Journal Name:
Ind. Eng. Chem. Process Des. Dev.; (United States)
Additional Journal Information:
Journal Volume: 22:1
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FISCHER-TROPSCH SYNTHESIS; CATALYSTS; IRON; CATALYTIC EFFECTS; POTASSIUM; ALKENES; CARBON MONOXIDE; CARBURIZATION; CHEMISORPTION; HYDROGEN; MOLECULAR WEIGHT; PARAFFIN; ALKALI METALS; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; HARDENING; HYDROCARBONS; METALS; NONMETALS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SORPTION; SURFACE HARDENING; SURFACE TREATMENTS; TRANSITION ELEMENTS; WAXES; 400201* - Chemical & Physicochemical Properties; 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)

Citation Formats

Arakawa, H, and Bell, A T. Effects of potassium promotion on the activity and selectivity of iron Fischer-Tropsch catalysts. United States: N. p., 1983. Web. doi:10.1021/i200020a017.
Arakawa, H, & Bell, A T. Effects of potassium promotion on the activity and selectivity of iron Fischer-Tropsch catalysts. United States. doi:10.1021/i200020a017.
Arakawa, H, and Bell, A T. Sat . "Effects of potassium promotion on the activity and selectivity of iron Fischer-Tropsch catalysts". United States. doi:10.1021/i200020a017.
@article{osti_5826481,
title = {Effects of potassium promotion on the activity and selectivity of iron Fischer-Tropsch catalysts},
author = {Arakawa, H and Bell, A T},
abstractNote = {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.},
doi = {10.1021/i200020a017},
journal = {Ind. Eng. Chem. Process Des. Dev.; (United States)},
number = ,
volume = 22:1,
place = {United States},
year = {1983},
month = {1}
}