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A Comparative Kinetic Study of Ethylene Polymerization Mediated by Iron, Cobalt and Chromium Catalysts Bearing the Same N,N,N-bis(imino)trihydroquinoline Научная публикация

Журнал Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694
Вых. Данные Год: 2019, Том: 369, Страницы: 1-9 Страниц : 9 DOI: 10.1016/j.jcat.2018.10.028
Ключевые слова 2-[1-(Arylimino)ethyl]-8-arylimino-5,6,7-trihydroquinoline; Cobalt; Iron; Chromium; Kinetic data; Ethylene polymerization
Авторы Huang Chuanbing 1,2,3,4 , Zakharov Vladimir A. 3,4 , Semikolenova Nina V. 3 , Matsko Mikhail A. 3 , Solan Gregory A. 1,5 , Sun Wen-Hua 1,2
Организации
1 Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2 CAS Research/Education Center for Excellence in Molecular Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3 Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russian Federation
4 Novosibirsk State University, Pirogova, 2, Novosibirsk 630090, Russian Federation
5 Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, UK

Информация о финансировании (6)

1 Российский фонд фундаментальных исследований
National Natural Science Foundation of China 		18-53-80031 / 51861145303
2 National Natural Science Foundation of China 21871275
3 National Natural Science Foundation of China 5171102116
4 Служба приема в университеты и колледжи [2015]37
5 Chinese Academy of Sciences
6 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) ГЗ-2017-2020

Реферат: The iron(II), cobalt(II) and chromium(III) chlorides, [2-{(2,4,6-Me3C6H2)NCMe}-8-{N(2,4,6-Me3C6H2)}C9H8N]MCln (n = 2, M = Fe LFeCl2, Co LCoCl2; n = 3, M = Cr LCrCl3), each bearing the same N,N,N-bis(imino)trihydroquinoline chelating ligand, have been employed as precatalysts for ethylene polymerization with modified methylaluminoxane (MMAO) as the co-catalyst. The kinetic profiles for these homogeneous polymerizations are reported in addition to the properties of the resultant polymers under comparable reaction conditions. All the experimental data indicate that the active metal center plays a key role on the catalytic performances of the complexes, especially the polymerization activity, thermal stability and lifetime of the active species. Under optimized conditions the iron catalyst displays the highest rate of polymerization but displays this for only a short period, while the chromium catalyst shows a lower maximum polymerization rate but sustains its performance over a longer period and at a higher temperature. In terms of the polymer properties, all three metal catalysts afford highly linear polymers with the metal center influencing the molecular weight and type of end group. Specifically, the cobalt and chromium catalysts produce narrowly dispersed low molecular weight polymers incorporating vinyl end groups, while the iron catalyst affords polymers of higher molecular weight displaying broad molecular weight distributions, with both fully saturated and unsaturated chain ends.
Библиографическая ссылка: Huang C. , Zakharov V.A. , Semikolenova N.V. , Matsko M.A. , Solan G.A. , Sun W-H.
A Comparative Kinetic Study of Ethylene Polymerization Mediated by Iron, Cobalt and Chromium Catalysts Bearing the Same N,N,N-bis(imino)trihydroquinoline
Journal of Catalysis. 2019. V.369. P.1-9. DOI: 10.1016/j.jcat.2018.10.028 WOS Scopus РИНЦ РИНЦ РИНЦ CAPlus OpenAlex
Файлы: Полный текст от издателя
Даты:
Поступила в редакцию: 13 сент. 2018 г.
Принята к публикации: 22 окт. 2018 г.
Опубликована online: 5 нояб. 2018 г.
Опубликована в печати: 1 янв. 2019 г.
Идентификаторы БД:
Web of science: WOS:000460711700001
Scopus: 2-s2.0-85055980167
РИНЦ: 38657862 | 41789308 | 41620913
Chemical Abstracts: 2018:2099035
OpenAlex: W2899722704
Цитирование в БД:
БД Цитирований
Scopus 11
Web of science 10
РИНЦ 3 11
OpenAlex 12
Альметрики: