Cation promotion effects in zeolite-supported F-T catalysts. 8th quarterly report, June 1985-August 1985

An investigation into zeolite-supported F-T catalysts begun under Grant No. DE-FG22-81PC40774 (Office of Fossil Energy, DOE) has produced results which suggest that alkali cations, remaining in a zeolite and serving to neutralize the structure, act to promote higher hydrocarbon formation. It appears that the F-T metal must be highly dispersed throughout the zeolite in the vicinity of these cations for this promotion effect to take place. This effect is also highly dependent upon alkali cation concentration. A new series of ruthenium catalysts having uniform average Ru particle diameters and supported on Y zeolites containing various alkali cations (Li/sup +/, Na/sup +/, K/sup +/, Rb/sup +/, Cs/sup +/) have been investigated to determine the effect of the neutralizing cations on CO hydrogenation at atmospheric pressure and 200 to 300/sup 0/C. The results of this investigation are discussed. 18 refs., 5 tabs.