Propylene Polymerization over Titanium-Magnesium Catalyst: Effect of Hydrogen on the Content of Active Centers with Different Stereospecificity and Their Reactivity in Propagation Reaction Научная публикация
| Журнал |
Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875 |
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| Вых. Данные | Год: 2020, Том: 607, Номер статьи : 117836, Страниц : 7 DOI: 10.1016/j.apcata.2020.117836 | ||||
| Ключевые слова | Effect of hydrogen in propylene polymerization; Number of active centers; Propagation rate constant; Stereospecific propylene polymerization; TREF–Temperature Rising Elution Fractionation; Titanium-magnesium (Ziegler–Natta) catalysts | ||||
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| Организации |
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Информация о финансировании (1)
| 1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | ГЗ-2017-2020 |
Реферат:
This paper presents data on the number of active centers (CPi) with different stereospecificity and the values of propagation rate constant (kPi) for these centers in the propylene polymerization over supported titanium-magnesium catalyst in the presence or absence of hydrogen. The indicated data were obtained by quenching the polymerization with radioactive carbon monoxide (14CO) with subsequent fractionation of the produced polymers by the TREF method into separate fractions differing in stereospecificity and estimation of the CPi and kPi values, which determine the formation of these fractions. The propagation rate constants calculated for active centers with different stereospecificity increase in the following order: kP(aspecific) ≈ kP(low isospecific) < kP(isospecific) < kP(highly isospecific).
Библиографическая ссылка:
Sukulova V.V.
, Barabanov A.A.
, Matsko M.A.
, Zakharov V.A.
Propylene Polymerization over Titanium-Magnesium Catalyst: Effect of Hydrogen on the Content of Active Centers with Different Stereospecificity and Their Reactivity in Propagation Reaction
Applied Catalysis A: General. 2020. V.607. 117836 :1-7. DOI: 10.1016/j.apcata.2020.117836 WOS Scopus РИНЦ CAPlus OpenAlex
Propylene Polymerization over Titanium-Magnesium Catalyst: Effect of Hydrogen on the Content of Active Centers with Different Stereospecificity and Their Reactivity in Propagation Reaction
Applied Catalysis A: General. 2020. V.607. 117836 :1-7. DOI: 10.1016/j.apcata.2020.117836 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
| Поступила в редакцию: | 15 июл. 2020 г. |
| Принята к публикации: | 13 сент. 2020 г. |
| Опубликована online: | 16 сент. 2020 г. |
| Опубликована в печати: | 25 окт. 2020 г. |
Идентификаторы БД:
| Web of science: | WOS:000592361800001 |
| Scopus: | 2-s2.0-85091556690 |
| РИНЦ: | 45307145 |
| Chemical Abstracts: | 2020:2072684 |
| OpenAlex: | W3088742834 |