Supported Ziegler-Natta Catalyst for Ethylene Polymerization: Novel Data on the Effect of Polymerization Temperature on the Number of Active Centers and Propagation Rate Constant Full article
| Journal |
Catalysis Communications
ISSN: 1566-7367 , E-ISSN: 1873-3905 |
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| Output data | Year: 2014, Volume: 45, Pages: 79-82 Pages count : 4 DOI: 10.1016/j.catcom.2013.10.041 | ||
| Tags | Activation energy, Active centers number, Ethylene polymerization, Propagation rate constant, Ziegler-Natta catalyst | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 12-03-31099 |
Abstract:
The number of active centers at ethylene polymerization over highly active supported catalyst TiCl4/MgCl2 + AlEt3 was determined at various polymerization temperatures. It was found that the increase in polymerization temperature in the range of 40–80 °C increases the number of active centers. The data on reversible changes in the polymerization rate with temperature in a single experiment give grounds for supposing that alteration of the number of active centers with temperature is a reversible process. The propagation rate constants and the activation energy of the propagation reaction (4.0 kcal mol− 1) were calculated; the latter value being considerably lower than the effective activation energy of polymerization (16.5 kcal mol− 1) due to the increase in CP with rising temperature.
Cite:
Barabanov A.A.
, Zakharov V.A.
Supported Ziegler-Natta Catalyst for Ethylene Polymerization: Novel Data on the Effect of Polymerization Temperature on the Number of Active Centers and Propagation Rate Constant
Catalysis Communications. 2014. V.45. P.79-82. DOI: 10.1016/j.catcom.2013.10.041 WOS Scopus РИНЦ OpenAlex ANCAN
Supported Ziegler-Natta Catalyst for Ethylene Polymerization: Novel Data on the Effect of Polymerization Temperature on the Number of Active Centers and Propagation Rate Constant
Catalysis Communications. 2014. V.45. P.79-82. DOI: 10.1016/j.catcom.2013.10.041 WOS Scopus РИНЦ OpenAlex ANCAN
Dates:
| Submitted: | Jun 17, 2013 |
| Accepted: | Oct 28, 2013 |
| Published online: | Nov 10, 2013 |
| Published print: | Feb 5, 2014 |
Identifiers:
| ≡ Web of science: | WOS:000331595400017 |
| ≡ Scopus: | 2-s2.0-84888089799 |
| ≡ Elibrary: | 21861203 |
| ≡ OpenAlex: | W1991360906 |
| ≡ Chemical Abstracts: | 2013:1987427 |
| ≡ Chemical Abstracts (print): | 160:159272 |