Complex support type catalyst, preparation method and application

• Main Authors: Zhang Runcong, Huang Qigu
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2016
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a complex support type catalyst, a preparation method and application, and belongs to the field of olefin coordination polymerization. The preparation method includes the steps that magnesium halide is dissolved in an organic alcohol-water mixed solvent, magnesium chloride and the organic alcohol-water mixed solvent are mixed according to a certain proportion, the magnesium halide and alcohol hydrate solution is transferred to an inert organic solvent to form emulsion, a silicon halide compound is added and makes contact with water to generate silica gel, a magnesium halide-silica gel complex support is prepared, the support reacts with a transition metal halide, filtering, washing and drying are carried out, and spherical magnesium halide-silica gel complex support supported type Ziegler-Natta main catalyst particles are obtained. The catalyst is uniform in particle size distribution, high in loading capacity and high in activity, and the main catalyst particles and polyolefin particl