Syndiospecific Active Centers in a Model Catalyst System Ti(Oi-C3H7)4–Al(C2H5)2Cl/Mg(C4H9)2 Modified with 2,6-Dimethyl Pyridine

Syndiospecific Active Centers in a Model Catalyst System Ti(Oi-C3H7)4–Al(C2H5)2Cl/Mg(C4H9)2 Modified with 2,6-Dimethyl Pyridine Научная публикация

Журнал

Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210

Вых. Данные

Год: 2025, Том: 66, Номер: 2, Страницы: 166-174 Страниц : 9 DOI: 10.1134/s0023158424602237

Авторы

Kissin Y.V. ¹ , Rishina L.A. ² , Lalayan S.S. ² , Krasheninnikov V.G. ² , Gusarov S.S. ²

Организации

1	Rutgers, The State University of New Jersey, Department of Chemistry and Chemical Biology, Piscataway, NJ 08854 USA
2	N.N. Semenov Federal Research Center for Chemical Physics RAS, Moscow, 119991 Russia

The article describes a modifying effect of 2,6-dimethyl pyridine (lutidine) in propylene polymerization reactions with a pseudo-homogeneous catalyst system Ti(Oi-C3H7)4–Al(C2H5)2Cl/Mg(C4H9)2. This catalyst system is a convenient model for the analysis of modifier effects (effects of “external donors”) in supported Ziegler–Natta polymerization catalysts. A combination of IR, 13C NMR and GPC data for polypropylene prepared with this catalyst in the presence of 2,6-dimethyl pyridine shows that the modifier converts a part of stereo-aspecific active centers (the centers producing atactic polypropylene), into syndiospecific centers.

Kissin Y.V. , Rishina L.A. , Lalayan S.S. , Krasheninnikov V.G. , Gusarov S.S.
Syndiospecific Active Centers in a Model Catalyst System Ti(Oi-C3H7)4–Al(C2H5)2Cl/Mg(C4H9)2 Modified with 2,6-Dimethyl Pyridine
Kinetics and Catalysis. 2025. V.66. N2. P.166-174. DOI: 10.1134/s0023158424602237 WOS РИНЦ CAPlus

Web of science:	WOS:001511747800001
РИНЦ:	82714524
Chemical Abstracts:	2025:1820201