Gas phase polymerization of ethylene with a silica-supported metallocene catalyst: influence of temperature on deactivation

Autor:	Roos, P., Meier, G.B., Samson, J.J.C., Samson, Job Jan C., Weickert, G., Westerterp, K.R.
Rok vydání:	1997
Předmět:	Ethylene Polymers and Plastics Chemistry Silica gel Organic Chemistry Methylaluminoxane Post-metallocene catalyst Polyethylene IR-71358 Catalysis chemistry.chemical_compound Triethylaluminium Chemical engineering Polymerization Materials Chemistry Organic chemistry METIS-106232
Zdroj:	Macromolecular rapid communications, 1997(18), 319-324. Wiley Online Library
ISSN:	1521-3927 1022-1336
Popis:	Ethylene was polymerized at 5 bar in a stirred powder bed reactor with silica supported rac-Me2Si[Ind]2ZrCl2/methylaluminoxane (MAO) at temperatures between 40°C and 80°C using NaCl as support bed and triethylaluminium (TEA) as a scavenger for impurities. For this fixed recipe and a given charge of catalyst. the average catalyst activity is reproducible within 10% for low temperatures. The polymerization rate and the rate of deactivation increase with increasing temperature. The deactivation could be modeled using a first order dependence with respect to the polymerization rate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::715c273f252a36fb4e13a1a05d17c41f https://doi.org/10.1002/marc.1997.030180408 Zobrazit plný text záznamu Plný text