SUPPORTED CATALYSTS FOR THE PRODUCTION OF 4-METHYL-1-PENTENE FROM PROPYLENE

摘要

1419445 Dimerisation catalyst SOC ITALIANA RESINE SIR SpA 31 July 1973 [20 Sept 1972] 36425/73 Heading B1E [Also in Division C5] A catalyst for the dimerisation of propylene to 4-methyl-1-pentene is made by: (a) heating a previously dried support for at least 30 mins. in an inert gas to a temperature of at least 150‹C; (b) mixing the product with a compound of a transition metal thermally decomposable below 400‹C and an alkali-metal in an atomic ratio transition metal to alkali metal of 1:50 to 1:1 and a total quantity of transition metal compound and alkali metal of 1 to 80% wt based on the support; and, (c) heating to a temperature of 150 to 500‹C and above the decomposition temperature of the transition metal compound in an inert gas for I to 120 mins. The support may be graphite, potassium carbonate, an alkali metal silicate or halide, magnesium sulphate or talc. Preferred transition metals are Au, Ni, Cr, Pd, Co and W and preferred alkali metals are Na and K.