| 摘要 |
The instant invention relates to a novel process for preparing catalysts which are useful in the disproportionation of olefins. In more detail the instant process comprises contacting within a solvent, a metallic complex having the formula LaMb(CO)c wherein L is selected from the group consisting WHEREIN Q is selected from the group consisting of N, P, As and Sb; Z is selected from the group consisting of O and S; X is selected from the group consisting of NR2, OH, OR and R; R is selected from the group consisting of C1 to C20 hydrocarbyl and hydrogen radicals; and R2 is selected from the group consisting of divalent C1 to C20 hydrocarbyl radicals; n is an integer of from 0 to 2; M is a Group VI-B metal selected from the group consisting of Cr, Mo and W; a may vary from 1 to 4; b may vary from 1 to 2; and c may vary from 2 to 10, with an ionic compound, said ionic compound being selected from the group consisting of compounds having the general formula R'4Q'X', R'3ZX', (R'4Q')(A1R'dX'4-d), (R'3Z)(A1R'dX'4-d), mixtures of R'4Q'X' or R'3ZX' with A1R'dX'3-d or mixtures thereof wherein R' is selected from the group consisting of C1 to C20 hydrocarbyl radicals and halogenated derivatives thereof, Q' is selected from the group consisting of nitrogen, phosphorous or arsenic, Z is selected from the group consisting of oxygen or sulfur, X' is halogen and d may vary from 0 to 3, and said ionic compound being at least partially soluble in said solvent and an activator, said activator comprising an organometallic derivative selected from the group consisting of compounds having the general formulas R''3A1X'(3-e), a mixture of the above compound with a compound having the general formula A1X'3 , a compound of the general formula R''fM'X'g, a mixture of one of several compounds having a formula R''fM'X'g with one of the various compounds having the formula R''eA1X'(3-e) and A1X'3 wherein R'' is selected from the group consisting of C1-C20 hydrocarbyl radicals and the alkoxy and halo derivatives thereof, M' is a metal selected from Groups I through III of the Periodic Table of Elements, X' is halogen, e is equal to 1 or 2, f is an integer between 1 and 3, and g is 0, 1 or 2, the atomic ratios of the metal in said activator to the metal in said metallic complex being from about 20:1 to 1:1, the molar ratio of Cr, Mo, or W of said metallic complex to ionic compound being from about 10:1 to 0.1:1, and the molar ratio of said Group I-III metal of said activator to ionic compound being from about 40:1 to 1.5:1.
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