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Effects of sodium, aluminium and manganese on the fischer-tropsch synthesis over alumina-supported iron catalysts

1986; Elsevier BV; Volume: 26; Linguagem: Inglês

10.1016/s0166-9834(00)82547-6

1873-3867

James Abbott, Neville Clark, B. G. Baker,

Catalytic Processes in Materials Science

Addition of sodium, aluminium or manganese to alumina-supported iron catalysts can influence hydrocarbon distributions produced by hydrogenation of carbon monoxide. Combinations of sodium (Na/Fe = 0.1) with either aluminium (Al/Fe = 0.9) or manganese (Mn/Fe = 0.4) produce stable catalysts with high selectivity for light olefins and concurrent supression of methane selectivity. These effects are probably due to influences on both the dispersion of iron the support, and electronic promotion. Ratios of olefin/paraffin = 10 were observed in the range C3–C5, with methane selectivity reduced to less than 10%.