GB659315A - Improvements in or relating to catalytic conversion of carbon monoxide with hydrogen - Google Patents

Abstract

The synthesis of hydrocarbons and oxygenated compounds from CO and H2 is effected with a catalyst comprising an iron oxide reduced to between 5 and 50, preferably 10-25, per cent of complete reduction and containing between 0.5 and 5 per cent of an alkali metal promoter. This reduction corresponds to an oxygen content of the catalyst of about 26-14, preferably 25-21 per cent. Fluidized operation is preferred, using catalysts of about 20-200, preferably 30-100 microns particle size. Iron oxide may be ground to about 30 microns or less, reduced with hydrogen, and then sintered to form particles of desired size or the oxide may be graded into different sizes which are separately reduced. Data are given showing that the catalysts have an activity equivalent to that of conventional catalysts of a higher degree of reduction while carbonization is less. In examples, pyrites ash or a fused mixture of natural and synthetic magnetite, promoted with potassium carbonate or nitrate, is reduced with hydrogen at 850-930 DEG F. for different times to yield catalysts of the desired degree of reduction.ALSO:A catalyst for the synthesis of hydrocarbons and oxygenated compounds from CO and H2 comprises an iron oxide reduced to between 5 and 50, preferably 10-25 per cent, of complete reduction and containing between 0.5 and 5 per cent of an alkali metal promoter. This reduction corresponds to an oxygen content of the catalyst of about 26-14, preferably 25-21 per cent. Fluidized operation is preferred, using catalysts of about 20-200, preferably 30-100 microns particle size. Iron oxide may be ground to about 30 microns or less, reduced with hydrogen, and then sintered to form particles of desired size or the oxide may be graded into different sizes which are separately reduced. Data are given showing that the catalyst have an activity equivalent to that of conventional catalysts of a higher degree of reduction while carbonization is less. In examples, pyrities ash or a fused mixture of natural and synthetic magnetite, promoted with potassium carbonate or nitrate, is reduced with hydrogen at 850-930 DEG F. for different times to yield catalysts of the desired degree of reduction.