Kinetic Features of Hexene-1 Polymerization over Supported Titanium-Magnesium Catalyst Full article
| Journal |
Macromolecular Reaction Engineering
ISSN: 1862-832X , E-ISSN: 1862-8338 |
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| Output data | Year: 2014, Volume: 8, Number: 9, Pages: 666-672 Pages count : 7 DOI: 10.1002/mren.201400009 | ||||
| Tags | Catalysts, Molecular weight distribution/molar mass distribution, Polyhexene, Polyolefins, Ziegler-Natta polymerization | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | The Ministry of Education and Science of the Russian Federation |
Abstract:
The data on the effect of cocatalyst composition and polymerization conditions on activity and MWD of polyhexene (PH) produced over a high-activity titanium-magnesium catalyst are obtained. The cocatalyst has an extremely strong effect on the MWD of polyhexene. When triisobutylaluminum is used as a cocatalyst, PH with high Mw and narrow MWD is produced. The use of TEA decreases the Mw of PH and broadens the MWD. It is found the ratio between the rate constant of chain transfer to TEA (k(tr)(Al)) and the propagation rate constant (k(p)) is two orders of magnitude higher than the k(tr)(Al)/k(p) value calculated for polymerization of ethylene and propylene. We attributed this effect to formation of polyhexene in the solution, as opposed to polymerization of ethylene and propylene in slurry polymerization. The addition of hydrogen at polymerization of hexene-1 significantly increases activity and stereospecificity.
Cite:
Echevskaya L.
, Matsko M.
, Nikolaeva M.
, Sergeev S.
, Zakharov V.
Kinetic Features of Hexene-1 Polymerization over Supported Titanium-Magnesium Catalyst
Macromolecular Reaction Engineering. 2014. V.8. N9. P.666-672. DOI: 10.1002/mren.201400009 WOS Scopus РИНЦ ANCAN OpenAlex
Kinetic Features of Hexene-1 Polymerization over Supported Titanium-Magnesium Catalyst
Macromolecular Reaction Engineering. 2014. V.8. N9. P.666-672. DOI: 10.1002/mren.201400009 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Mar 21, 2014 |
| Accepted: | Apr 9, 2014 |
| Published online: | Jun 18, 2014 |
| Published print: | Sep 1, 2014 |
Identifiers:
| Web of science: | WOS:000343705300005 |
| Scopus: | 2-s2.0-84925360373 |
| Elibrary: | 24043219 |
| Chemical Abstracts: | 2014:1002903 |
| Chemical Abstracts (print): | 161:390226 |
| OpenAlex: | W1521575081 |