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The second life of Ziegler catalyst. Ethylene polymerization reactions with TiCl 4 –Al[C 2 H 5 ] 2 Cl/Mg(C 4 H 9 ) 2 catalyst
Author(s) -
Kissin Yury V.,
Rishina Laura A.,
Lalayan Svetlana S.,
Krasheninnikov Vadim G.
Publication year - 2019
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.47340
Subject(s) - catalysis , ethylene , polyethylene , copolymer , polymerization , polymer chemistry , ternary operation , chemistry , materials science , organic chemistry , polymer , computer science , programming language
The Ziegler catalyst, a combination of TiCl 4 and Al(C 2 H 5 ) 2 Cl, was widely used since 1950s for the commercial manufacture of linear polyethylene. We found that addition of Mg(C 4 H 9 ) 2 to this catalyst at [Al]:[Mg] molar > 2 leads to the formation of a very active catalyst system for homopolymerization of ethylene and for copolymerization of ethylene and 1‐alkenes. The principal advantages of the ternary TiCl 4 –Al(C 2 H 5 ) 2 Cl/Mg(C 4 H 9 ) 2 catalyst are very high activity (six to seven times higher than the activity of the original Ziegler catalyst), low cost, and the ease of use: the catalyst is prepared in situ from three commercially available cheap compounds soluble in aliphatic and aromatic hydrocarbons. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47340.