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 Научная публикация
| Журнал |
Catalysis Communications
ISSN: 1566-7367 , E-ISSN: 1873-3905 |
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| Вых. Данные | Год: 2014, Том: 45, Страницы: 79-82 Страниц : 4 DOI: 10.1016/j.catcom.2013.10.041 | ||
| Ключевые слова | Activation energy, Active centers number, Ethylene polymerization, Propagation rate constant, Ziegler-Natta catalyst | ||
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| Организации |
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Информация о финансировании (1)
| 1 | Российский фонд фундаментальных исследований | 12-03-31099 |
Реферат:
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.
Библиографическая ссылка:
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 CAPlusCA OpenAlex
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 CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 17 июн. 2013 г. |
| Принята к публикации: | 28 окт. 2013 г. |
| Опубликована online: | 10 нояб. 2013 г. |
| Опубликована в печати: | 5 февр. 2014 г. |
Идентификаторы БД:
| Web of science: | WOS:000331595400017 |
| Scopus: | 2-s2.0-84888089799 |
| РИНЦ: | 21861203 |
| Chemical Abstracts: | 2013:1987427 |
| Chemical Abstracts (print): | 160:159272 |
| OpenAlex: | W1991360906 |