Hydrolysis of diethyl aluminum chloride on an inorganic filler surface

There has been increased interest recently in the use of natural aluminosilicates as carriers of organometallic catalysts for the polymerization of alkenes. Polymerization in catalyst systems fixed on kaolin, tufa, etc., is aimed at obtaining highly filled polymers. Since complex organometallic catalysts are highly sensitive to proton donors, water in particular, aluminosilicate carriers are usually heat-treated before they come into contact with the catalyst's components. This paper reports an investigation of the interaction of organoaluminum compounds with the functional groups on a kaolin surface. They determined some quantitative characteristics of the hydrolysis reaction of diethyl aluminum chloride and suggest that organoaluminum compounds are also consumed in reactions with siloxane groups on the surface.