New Promising Monoterpene‑Derived Internal Donors in the Composition of Supported Titanium‑Magnesium Catalysts for Polypropylene Production | Sciact - CRIS-system of Boreskov Institute of Catalysis

New Promising Monoterpene‑Derived Internal Donors in the Composition of Supported Titanium‑Magnesium Catalysts for Polypropylene Production Full article

Journal

Iranian Polymer Journal
ISSN: 1026-1265 , E-ISSN: 1735-5265

Output data

Year: 2025, DOI: 10.1007/s13726-025-01486-y

Tags

Titanium–magnesium catalysts · Propylene polymerization · Polypropylene · Ziegler–Natta catalysts · Internal electron donors

Authors

Nechepurenko Ivan V. ¹ , Barabanov Artem A. ² , Mironenko Roman M. ³ , Volcho Konstantin P. ¹ , Likholobov Vladimir A. ² , Salakhutdinov Nariman F. ¹ , Matsko Mikhail A. ² , Zakharov Vladimir A. ²

Affiliations

1	Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences
2	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
3	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

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.

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 Scopus OpenAlex publication_identifier_short.sciact_ihcp_identifier_type

Submitted:	Dec 26, 2024
Accepted:	Mar 24, 2025
Published online:	Apr 25, 2025

Web of science:	WOS:001475725100001
Scopus:	2-s2.0-105003485554
OpenAlex:	W4409800381
publication_identifier.sciact_ihcp_identifier_type:	4451

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