ACRYLIC DIMERIZATION USING SUPPORTED CATALYSTS

    公开(公告)号:DE3267173D1

    公开(公告)日:1985-12-05

    申请号:DE3267173

    申请日:1982-08-09

    Abstract: A process for dimerizing acrylonitrile to produce adiponitrile and/or 1,4-dicyanobutenes comprises contacting acrylonitrile with a catalyst at a temperature of 20 to 250 DEG C in the presence of hydrogen, said catalyst comprising a polymer support having a ruthenium complex bonded thereto, said polymer support comprising an organic polymer backbone having trivalent pendant atoms selected from P, As, Sb, Bi and N covalently bonded thereto and randomly distributed in said polymer, said ruthenium complex being capable of catalyzing the dimerization of acrylonitrile to adiponitrile and/or 1,4-dicyanobutenes and comprising Ru and at least two homogeneous ligands having at least four ligating bonds bonding to said Ru, the Ru in each ruthenium complex datively bonding to a pendant atom in said polymer support, the Ru/pendant atom ratio in said catalyst being at least 0.001, said complex having on the average no more than one homogeneous phosphine ligand per atom of ruthenium. … Preferred ruthenium complexes are those which are substantially free of homogeneous phosphine ligands. The organic polymer support can be a terpolymer of 2-20% divinyl benzene, 0.4 to 6% para-diphenylphosphenostyrene and the balance styrene.

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