Kinetic Study of Chain Transfer Reactions upon 1-Hexene Polymerization on Highly Active Supported Titanium-Magnesium Catalysts Full article
| Journal |
Catalysis in Industry
ISSN: 2070-0504 , E-ISSN: 2070-0555 |
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| Output data | Year: 2019, Volume: 11, Number: 3, Pages: 224-233 Pages count : 10 DOI: 10.1134/S2070050419030036 | ||
| Tags | polyhexene; molecular weight; molecular weight distribution; Ziegler-Natta catalyst; titanium-magnesium catalyst (TMC); gel permeation chromatography (GPC) | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Federal Agency for Scientific Organizations | 0303-2016-0009 |
Abstract:
Data on the effect the concentrations of the monomer, triethylaluminium, and hydrogen on the molecular weight of polyhexene upon 1-hexene polymerization over supported titanium-magnesium catalyst are obtained. The ratios between propagation rate constant and the rate constants of the reactions of polymer chain transfer with monomer, triethylaluminium (AlEt3), triisobutylaluminium, and hydrogen are calculated. The data allow us to estimate the effect of individual reactions of chain transfer on the polymer's molecular weight under different polymerization conditions. The data help to select polymerization conditions for obtaining polyhexene of a desired molecular weight. The heterogeneity of active centers is observed in the reaction of chain transfer with hydrogen when using AlEt3 as co-catalyst, which alters the polymer's polydispersity when the concentration of hydrogen is varied in the reaction mixture. The molecular weight distribution is analyzed via resolution into Flory components for polyhexene characterized by different polydispersity.
Cite:
Echevskaya L.G.
, Matsko M.A.
, Zakharov V.A.
Kinetic Study of Chain Transfer Reactions upon 1-Hexene Polymerization on Highly Active Supported Titanium-Magnesium Catalysts
Catalysis in Industry. 2019. V.11. N3. P.224-233. DOI: 10.1134/S2070050419030036 WOS Scopus РИНЦ OpenAlex
Kinetic Study of Chain Transfer Reactions upon 1-Hexene Polymerization on Highly Active Supported Titanium-Magnesium Catalysts
Catalysis in Industry. 2019. V.11. N3. P.224-233. DOI: 10.1134/S2070050419030036 WOS Scopus РИНЦ OpenAlex
Original:
Ечевская Л.Г.
, Мацько М.А.
, Захаров В.А.
Кинетическое исследование реакций ограничения роста полимерной цепи при полимеризации гексена-1 на высокоактивных нанесенных титан-магниевых катализаторах
Катализ в промышленности. 2019. Т.19. №2. С.104-113. DOI: 10.18412/1816-0387-2019-2-104-113RSCI РИНЦ AN OpenAlex
Кинетическое исследование реакций ограничения роста полимерной цепи при полимеризации гексена-1 на высокоактивных нанесенных титан-магниевых катализаторах
Катализ в промышленности. 2019. Т.19. №2. С.104-113. DOI: 10.18412/1816-0387-2019-2-104-113RSCI РИНЦ AN OpenAlex
Dates:
| Submitted: | Oct 15, 2018 |
| Accepted: | Oct 19, 2018 |
| Published print: | Jul 1, 2019 |
| Published online: | Sep 16, 2019 |
Identifiers:
| Web of science: | WOS:000486336600006 |
| Scopus: | 2-s2.0-85073079098 |
| Elibrary: | 41683981 |
| OpenAlex: | W2973764310 |