Method for preparation of spherical support for olefin polymerization catalyst
Provided is a method for preparing a support for olefin polymerization catalysts used in polyolefin preparation processes. Particularly, provided is a novel method for preparing a support for olefin polymerization catalysts comprising the reaction of metal magnesium with an alcohol in the presence of an additive for initiating the reaction, characterized in that halogenated nitrogen compound is used as the additive for initiating the reaction, resulting in a spherical dialkoxy magnesium support.
1. A method for preparing a spherical support for olefin catalysts, which comprises reacting metal magnesium with an alcohol in the presence of a reaction initiator, characterized in that the reaction initiator is a halogenated nitrogen compound selected from the group consisting of the compounds represented by the following general formulas I-IV, wherein the halogenated nitrogen compound is used at the amount of 0.001-0.2 parts by weight, based on 1 part by weight of the metal magnesium, and the alcohol is used at the amount of 5-50 parts by weight, based on 1 part by weight of the metal magnesium:
wherein, X refers to halogen, and R 1 , R 2 , R 3 and R 4 are independently hydrogen, or alkyl or aryl having C 1-12 ;
wherein, X refers to halogen;
wherein, x refers to halogen, and R 1 , R 2 , R 3 and R 4 are independently hydrogen, or alkyl or aryl having C 1-12 ;
wherein, x refers to halogen, and R 1 and R 2 are independently hydrogen, or alkyl or aryl having C 1-12 .
2. The method for preparing a spherical support for olefin polymerization catalysts according to claim 1 , wherein the alcohol is at least one selected from the group consisting of aliphatic alcohols represented by the general formula ROH, wherein R is an alkyl having 1-6 carbon atoms, and aromatic alcohols.