Реферат: By use of the quenching technique with 14CO and 14CO2 the number of active centers and the propagation rate constants (kp) were determined for the propylene polymerization on different titanium-magnesium catalysts in the presence and absence of an organoaluminium cocatalyst. The kp values at 70°C were found to be 500– 1000 1·mol−1·s−1, which were confirmed by independent data of molecular mass measurements of the isotatic polymer after a short polymerization time (5 s). Similar isotactic and atactic kp values were found. The maximum number of active centers for supported titanium-magnesium catalysts can reach about 10% of the titanium content in the catalyst. The kp values of ethylene polymerization on catalysts active without an organoaluminium cocatalyst were also determined (≈ 104 l·mol−1·s−1 at 70°C).

Библиографическая ссылка: Bukatov G.D. , Shepelev S.H. , Zakharov V.A. , Sergeev S.A. , Yermakov Y.I.
Propylene Polymerization on Titanium-Magnesium Catalysts Determination of the Number of Active Centers and Propagation Rate Constants
Makromolekulare Chemie up to 1993, continued as Macromolecular Chemistry and Physics. 1982. V.183. N11. P.2657-2665. DOI: 10.1002/macp.1982.021831104 WOS РИНЦ CAPlusCA OpenAlex

Даты:

Поступила в редакцию:	27 янв. 1982 г.
Опубликована в печати:	19 нояб. 1982 г.
Опубликована online:	12 мар. 2003 г.

Идентификаторы БД:

Web of science:	WOS:A1982PT56100004
РИНЦ:	26553450
Chemical Abstracts:	1983:35031
Chemical Abstracts (print):	98:35031
OpenAlex:	W1607973983

Цитирование в БД:

БД	Цитирований
Web of science	36
РИНЦ	19
OpenAlex	45

Альметрики: