Effects of Addition of Potassium Promoter to Titania-Supported Ultrafine Particles of Iron Metal Prepared by Gas Evaporation Method

Effects of addition of potassium promoter on the catalytic properties of ultrafine particles of Fe metal prepared by the gas evaporation method have been studied for CO hydrogenation. The potassium promoter was found to be very effective in enhancing the catalytic activity and light olefin selectivity of UFP-Fe/TiO2, an optimum amount of K2CO3/Fe being 6 wt%. Four kinds of TiO2 with different physical and chemical properties were used as supports for UFP-Fe, and their effects on the activity and light olefin selectivity also have been discussed.