Dimerization process

Abstract

Abstract A GROUP VIII WATER-SOLUBLE METAL SALT IMPREGNATED UPON A SUITABLE SUPPORT SUCH AS ALUMINUM OXIDE, SILICA, ACTIVATED CARBON OR THE LIKE, IS HEAT-TREATED IN AN INERT ATMOSPHERE AT A TEMPERATURE SUFFICIENT TO REMOVE WATER AND ABSORBED OXYGEN FROM THE SUPPORTED METAL SALT, BUT INSUFFICIENT TO OXIDIZE THE METAL SALT TO ITS OXIDES. THIS CATALYST IS THEN ACTIVATED BY TREATING IT WITH AN ORGANOMETALLIC COMPOUND R2M, WHEREIN M IS A METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, MAGNESIUM, CALCIUM, STRONTIUM, ZINC, CADMIUM, BORON, AND ALUMINUM, AND R IS A MONOVALENT ORGANO OR HYDROCARBON RADICAL CONTAINING FROM 1-20 CARBON ATOMS, AND N IS AN INTEGER RANGING FROM 1-3 EQUAL TO THE VALENCE OF M. CATALYSTS ACTIVATED IN THIS MANNER HAVE BEEN FOUND TO HAVE SURPRISINGLY INCREASED ACTIVITY FOR DIMERIZING AND CONDIMERIZING MONOOLEFINS AND, PARTICULARLY, IN THE CODIMERIZATION OF PROPYLENE WITH NORMAL BUTENE, WHEREIN THE SELECTIVIEY TO C7''S IN THE REACTION MIXTURE IS REMARKABLY ENHANCED.

Inventors

• 👤 Joseph K Mertzweiller
• 👤 Horace M Tenney

Bibliographic Details