New promising monoterpene‑derived internal donors in the composition of supported titanium‑magnesium catalysts for polypropylene production Научная публикация
Журнал |
Iranian Polymer Journal
ISSN: 1026-1265 |
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Вых. Данные | Год: 2025, DOI: 10.1007/s13726-025-01486-y | ||||||
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Организации |
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Информация о финансировании (3)
1 | Министерство науки и высшего образования Российской Федерации | FWUE-2022-0007 |
2 | Министерство науки и высшего образования Российской Федерации | FWUR-2024-0039 |
3 | Министерство науки и высшего образования Российской Федерации | FWUR-2024-0037 |
Реферат:
Dialkyl malonates and dialkyl 1,3-dimethoxypropanes containing one or two natural pinane fragments were obtained for the first time and used as internal donors in the composition of titanium–magnesium catalysts (TMC) for propylene polymerization. It was found that diethyl 2-isobutyl-2-pinanylmalonate (DM) and 2-isobutyl-2-pinanyl-1,3-dimethoxypropane (DP) are anchored on the surface of magnesium chloride during the synthesis of titanium–magnesium catalysts TMC-DM and TMCDP. Their content in the catalysts is 9.4 and 15.6 wt%, respectively. Catalyst TMC-DP has high activity and stereospecificity in propylene polymerization similar to the known titanium–magnesium catalyst containing diisobutyl dimethoxypropane. At the same time, the catalyst TMC-DP produces polypropylene with broader molecular-weight distribution (MWD, Mw/Mn = 4.2–4.4) which is close to MWD of polypropylene produced over TMC containing dibutyl phthalate as internal donor (Mw/Mn = 4–5). Data on the effect of hydrogen and the composition of external donor at propylene polymerization on the activity of catalyst TMC-DP and the molecular mass distribution of polypropylene produced over this catalyst are presented. It is found that catalyst TMC-DP allows to produce polypropylene with different polydispersity (Mw/Mn = 3.6–4.4) and different molecular weight at variation of the composition of external donor and the hydrogen content.
Библиографическая ссылка:
Nechepurenko I.V.
, Barabanov A.A.
, Mironenko R.M.
, Volcho K.P.
, Likholobov V.A.
, Salakhutdinov N.F.
, Matsko M.A.
, Zakharov V.A.
New promising monoterpene‑derived internal donors in the composition of supported titanium‑magnesium catalysts for polypropylene production
Iranian Polymer Journal. 2025. DOI: 10.1007/s13726-025-01486-y WOS OpenAlex
New promising monoterpene‑derived internal donors in the composition of supported titanium‑magnesium catalysts for polypropylene production
Iranian Polymer Journal. 2025. DOI: 10.1007/s13726-025-01486-y WOS OpenAlex
Даты:
Поступила в редакцию: | 26 дек. 2024 г. |
Принята к публикации: | 24 мар. 2025 г. |
Опубликована online: | 25 апр. 2025 г. |
Идентификаторы БД:
Web of science: | WOS:001475725100001 |
OpenAlex: | W4409800381 |
Цитирование в БД:
Пока нет цитирований