New Ways of Controlling the Molecular Mass Characteristics and Distribution of Branches for Polyethylene Synthesized over Supported Catalysts Containing Fe(II) Bis(imino)pyridyl and Ni(II) Bis(imine) Complexes | Sciact - CRIS-система Института катализа

New Ways of Controlling the Molecular Mass Characteristics and Distribution of Branches for Polyethylene Synthesized over Supported Catalysts Containing Fe(II) Bis(imino)pyridyl and Ni(II) Bis(imine) Complexes Научная публикация

Журнал

Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555

Вых. Данные

Год: 2023, Том: 15, Номер: 3, Страницы: 267–277 Страниц : 11 DOI: 10.1134/S2070050423030066

Ключевые слова

ethylene polymerization, supported catalysts, Fe(II) bis(imino)pyridyl complexes, Ni(II) bis(imine) complexes, molecular mass and molecular weight distribution control, bimodal polyethylene

Авторы

Mats’ko M.A. ¹ , Semikolenova N.V. ¹ , Zakharov V.A. ¹

Организации

1	Boreskov Institute of Catalysts, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

0239-2021-0004

Data on the ways of controlling the molecular structure of polyethylene (PE) synthesized over the supported catalysts containing Fe(II) bis(imino)pyridyl (LFeCl2) and Ni(II) bis(imine) (*LNiBr2) complexes immobilized on a silica gel modified with aluminum oxide (SiO2(Al)) are presented. Linear polyethylene with different molecular masses and a controllable molecular weight distribution (MWD) is synthesized by varying the conditions of polymerization on LFeCl2/SiO2(Al) catalysts. Ethylene homopolymerization over *LNiBr2/SiO2(Al) catalysts results in branched polyethylene with molecular mass and thermophysical characteristics close to that of low density polyethylene synthesized by ethylene copolymerization with α-olefins over supported metallocene and Ziegler type catalysts. A way for designing supported bicomponent catalysts containing LFeCl2 and *LNiBr2 complexes immobilized on an SiO2(Al) support for the targeted synthesis of polyethylene with a required molecular structure is proposed. Examples are given for the synthesis of linear polyethylene with a bimodal MWD on a bicomponent supported catalyst containing two different LFeCl2 complexes, the synthesis of polyethylene with a controllable distribution of branches on a bicomponent catalyst prepared via the immobilization of LFeCl2 and *LNiBr2 complexes on a SiO2(Al) support, and the modification of a chromium oxide catalyst with LFeCl2 complex for controlling the molecular mass and branch distributions in synthesized polyethylene are given.

Mats’ko M.A. , Semikolenova N.V. , Zakharov V.A.
New Ways of Controlling the Molecular Mass Characteristics and Distribution of Branches for Polyethylene Synthesized over Supported Catalysts Containing Fe(II) Bis(imino)pyridyl and Ni(II) Bis(imine) Complexes
Catalysis in Industry. 2023. V.15. N3. P.267–277. DOI: 10.1134/S2070050423030066 WOS Scopus РИНЦ OpenAlex

Мацько М.А. , Семиколенова Н.В. , Захаров В.А.
Новые возможности регулирования молекулярно-массовых характеристик и распределения разветвлений в полиэтилене, получаемом на нанесенных катализаторах, содержащих бис(имино)пиридильные комплексы Fe(II) И бис(иминные) комплексы Ni(II)
Катализ в промышленности. 2022. Т.22. №5. С.27-39. DOI: 10.18412/1816-0387-2022-5-27-39 РИНЦ CAPlus OpenAlex

Поступила в редакцию:	29 апр. 2022 г.
Принята к публикации:	1 июн. 2022 г.
Опубликована в печати:	4 сент. 2023 г.
Опубликована online:	4 сент. 2023 г.

Web of science:	WOS:001061937600006
Scopus:	2-s2.0-85169674379
РИНЦ:	56442963
OpenAlex:	W4386416783

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