Premium
Preparation of porous spherical MgCl 2 /SiO 2 complex support as precursor for catalytic propylene polymerization
Author(s) -
Jiang Tao,
Chen Wei,
Zhao Feng,
Liu Yuexiang,
Wang Ruen,
Du Hongbin,
Zhang Tianyi
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22263
Subject(s) - catalysis , polymerization , polypropylene , materials science , porosity , chemical engineering , polymer chemistry , morphology (biology) , ziegler–natta catalyst , stereospecificity , propylene oxide , polymer , chemistry , organic chemistry , composite material , copolymer , ethylene oxide , biology , engineering , genetics
Abstract The MgCl 2 /SiO 2 complex support was prepared by spray drying using alcoholic suspension, which contained MgCl 2 and SiO 2 . The complex support reacted with TiCl 4 and di‐ n ‐butyl phthalate, giving a catalyst for propylene polymerization. The catalyst was spherical and porous with high specific surface area. TEA was used as a cocatalyst, and four kinds of alkoxysilane were used as external donors. The bulk polymerization of propylene was studied with the catalyst system. The effect of the reaction conditions and external donor on the polymerization were investigated. The results showed that the catalyst had high activity, high stereospecificity, and sensitive hydrogen responsibility. Polypropylene has good grain morphology because of duplicating the morphology of the catalyst. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 1296–1299, 2005