In situ CP MAS NMR Spectroscopy under Continuous-Flow Conditions to Monitor Real Time Dynamics During Propene Polymerization over a Supported Ziegler Catalyst Научная публикация
Журнал |
Macromolecular Rapid Communications
ISSN: 1022-1336 , E-ISSN: 1521-3927 |
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Вых. Данные | Год: 1999, Том: 20, Номер: 10, Страницы: 536-540 Страниц : 5 DOI: 10.1002/(SICI)1521-3927(19991001)20:10<536::AID-MARC536>3.0.CO;2-Z | ||||
Ключевые слова | NUCLEAR MAGNETIC-RESONANCE; OLEFIN POLYMERIZATION; NATTA CATALYSTS; STATE; ZEOLITE; CONVERSION | ||||
Авторы |
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Организации |
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Реферат:
In situ propene polymerization was observed using CP MAS (cross polarization with magic angle spinning) 13C NMR spectroscopy under the conditions of continuously flowing propene through a supported Ziegler catalyst treated with triethylaluminium. The signals at 44, 26, and 22 ppm attributed to the CH2, CH, and CH3 groups of polypropene, respectively, were found to appear upon exposure to the propene flow (0.1 L/min). An increase in intensities of these lines was observed for 30 min, then they remained approximately constant. The cross-polarization parameters of nascent polypropene, measured using standard techniques, were close to those of typical crystalline polypropene. The technique has a great potential as an effective tool for the investigation of the polypropene formation on the Ziegler catalyst.
Библиографическая ссылка:
Mori H.
, Kono H.
, Terano M.
, Nosov A.
, Zakharov V.A.
In situ CP MAS NMR Spectroscopy under Continuous-Flow Conditions to Monitor Real Time Dynamics During Propene Polymerization over a Supported Ziegler Catalyst
Macromolecular Rapid Communications. 1999. V.20. N10. P.536-540. DOI: 10.1002/(SICI)1521-3927(19991001)20:10<536::AID-MARC536>3.0.CO;2-Z WOS Scopus РИНЦ
In situ CP MAS NMR Spectroscopy under Continuous-Flow Conditions to Monitor Real Time Dynamics During Propene Polymerization over a Supported Ziegler Catalyst
Macromolecular Rapid Communications. 1999. V.20. N10. P.536-540. DOI: 10.1002/(SICI)1521-3927(19991001)20:10<536::AID-MARC536>3.0.CO;2-Z WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 7 июн. 1999 г. |
Принята к публикации: | 12 июл. 1999 г. |
Опубликована online: | 16 сент. 1999 г. |
Опубликована в печати: | 1 окт. 1999 г. |
Идентификаторы БД:
Web of science | WOS:000083048300007 |
Scopus | 2-s2.0-22844457243 |
РИНЦ | 13316198 |
Chemical Abstracts | 1999:665657 |
Chemical Abstracts (print) | 131:257973 |
OpenAlex | W1969694458 , W4234087712 |