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The Number of Active Centers and Propagation Rate Constant in Ethylene Polymerization with a Homogeneous Catalyst Based on Cobalt 2,6-Bis[imino]pyridyl Complex with Methylaluminoxane Activator Научная публикация

Журнал Polymer Science Series B
ISSN: 1560-0904 , E-ISSN: 1531-8583
Вых. Данные Год: 2008, Том: 50, Номер: 11-12, Страницы: 326-329 Страниц : 4 DOI: 10.1134/S1560090408110067
Ключевые слова Active Center; Polymer Science Series; Pyridyl; Imino; Homogeneous Catalyst
Авторы Barabanov A.A. 1 , Semikolenova N.V. 1 , Bukatov G.D. 1 , Mats’ko M.A. 1 , Zakharov V.A. 1
Организации
1 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 5, Novosibirsk, 630090, Russia

Информация о финансировании (1)

1 Российский фонд фундаментальных исследований 07-03-00311

Реферат: The number of active centers Cp and propagation rate constant kp upon ethylene polymerization with a homogeneous catalyst based on a cobalt complex with bis[imino]pyridyl ligands (LCoCl2, where L is 2,6-(2,6-(Me)2C6H3N=CMe)2C5H3N) using methylaluminoxane as an activator was determined by quenching by radioactive carbon monoxide (14CO). It was found that the drop in activity during polymerization on the above catalyst is due to the decreasing number of active centers (from 0.23 to 0.14 mol/mol Co within 15 min of polymerization); the propagation rate constant remained unchanged, 3.5 × 103 l/(mol s) at 35°C, which is substantially lower than for a catalyst based on an iron complex with analogous bis[imino]pyridyl ligands. It follows from the data on molecular mass characteristics of the produced polymer that the homogeneous catalyst LCoCl2/methylaluminoxane is of monocenter type, and the obtained value of the propagation rate constant reflects the true reactivity of its active centers
Библиографическая ссылка: Barabanov A.A. , Semikolenova N.V. , Bukatov G.D. , Mats’ko M.A. , Zakharov V.A.
The Number of Active Centers and Propagation Rate Constant in Ethylene Polymerization with a Homogeneous Catalyst Based on Cobalt 2,6-Bis[imino]pyridyl Complex with Methylaluminoxane Activator
Polymer Science Series B. 2008. V.50. N11-12. P.326-329. DOI: 10.1134/S1560090408110067 WOS Scopus РИНЦ OpenAlex
Оригинальная: Барабанов А.А. , Семиколенова Н.В. , Букатов Г.Д. , Мацько М.А. , Захаров В.А.
Число активных центров и константа скорости роста при полимеризации этилена на гомогенном катализаторе на основе 2,6-бис(имино)пиридинового комплекса кобальта с активатором метилалюмоксаном
Высокомолекулярные соединения. Серия Б. 2008. Т.50. №11. С.2048-2052. РИНЦ CAPlusCA
Даты:
Поступила в редакцию: 10 февр. 2008 г.
Опубликована в печати: 1 дек. 2008 г.
Опубликована online: 23 дек. 2008 г.
Идентификаторы БД:
Web of science: WOS:000261959100006
Scopus: 2-s2.0-59849112362
РИНЦ: 13584666
OpenAlex: W2059860272
Цитирование в БД:
БД Цитирований
Web of science 2
Scopus 3
РИНЦ 3
OpenAlex 1
Альметрики: