Copolymerization of Ethylene with Alpha-Olefins over Supported Titanium–Magnesium Catalysts Containing Titanium Compounds in Different Oxidation and Coordination States Full article
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Applied Sciences (Switzerland)
ISSN: 2076-3417 |
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| Output data | Year: 2023, Volume: 13, Number: 8, Article number : 5030, Pages count : 11 DOI: 10.3390/app13085030 | ||||
| Tags | Ziegler-Natta catalysts; titanium-magnesium catalysts; titanium oxidation state; ethylene–1-hexene copolymerization; ethylene–propylene copolymerization; copolymer heterogeneity | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
Abstract:
Data were obtained on the copolymerization of ethylene with α-olefins over supported titanium–magnesium catalysts (TMC) prepared on the same magnesium dichloride support but differing in the composition and oxidation state of titanium. The copolymerization kinetics of ethylene with 1-hexene over TMC of different compositions were studied. Data on the composition of the produced ethylene–1-hexene copolymers, their molecular weight distribution, thermophysical characteristics, and branching distribution were presented. The constants of ethylene–1-hexene copolymerization over catalysts with different compositions were calculated. The TMC containing only Ti(II) compounds as the active component exhibited increased copolymerizing ability compared to the conventional TiCl4/MgCl2 catalyst containing Ti(III) compounds as the active component. In addition, TMC with Ti(II) as an active component produces copolymers with a more uniform branching distribution. It was shown that the TMC containing isolated Ti(II) ions could be used to produce X-ray amorphous ethylene-propylene elastomers with a high yield.
Cite:
Mikenas T.B.
, Zakharov V.A.
, Guan P.
, Matsko M.A.
Copolymerization of Ethylene with Alpha-Olefins over Supported Titanium–Magnesium Catalysts Containing Titanium Compounds in Different Oxidation and Coordination States
Applied Sciences (Switzerland). 2023. V.13. N8. 5030 :1-11. DOI: 10.3390/app13085030 WOS Scopus РИНЦ AN OpenAlex
Copolymerization of Ethylene with Alpha-Olefins over Supported Titanium–Magnesium Catalysts Containing Titanium Compounds in Different Oxidation and Coordination States
Applied Sciences (Switzerland). 2023. V.13. N8. 5030 :1-11. DOI: 10.3390/app13085030 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Mar 15, 2023 |
| Published print: | Apr 1, 2023 |
| Accepted: | Apr 13, 2023 |
| Published online: | Apr 17, 2023 |
Identifiers:
| Web of science: | WOS:000979124200001 |
| Scopus: | 2-s2.0-85156157839 |
| Elibrary: | 54924418 |
| Chemical Abstracts: | 2023:879444 |
| OpenAlex: | W4366285230 |