Polypropylene obtained through zeolite supported catalysts



Document title: Polypropylene obtained through zeolite supported catalysts
Journal: Polimeros (Sao Carlos)
Database: PERIÓDICA
System number: 000314145
ISSN: 1678-5169
Authors: 1
Institutions: 1Universidade Federal do Rio de Janeiro, Instituto de Macromoleculas Professora Eloisa Mano, Rio de Janeiro. Brasil
Year:
Volumen: 14
Number: 4
Pages: 251-260
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract Propylene polymerizations were carried out with f2C(Flu)(Cp)ZrCl2 and SiMe2(Ind)2ZrCl2 catalysts supported on silica, zeolite sodic mordenite (NaM) and acid mordenite (HM). The polymerizations were performed at different temperatures and varying aluminium/zirconium molar ratios ([Al]/[Zr]). The effect of these reaction parameters on the catalyst activity was investigated using a proposed statistical experimental planning. In the case of f2C(Flu)(Cp)ZrCl2, SiO2 and NaM were used as support and the catalyst performance evaluated using toluene and pentane as polymerization solvent. The molecular weight, molecular weight distribution, melting point and crystallinity of the polymers were examined. The results indicate very high activities for the syndiospecific heterogeneous system. Also, the polymers obtained had superior Mw and stereoregularity
Disciplines: Química
Keyword: Química de polímeros,
Química orgánica,
Polipropileno,
Catalizador metalocénico,
Zeolitas
Keyword: Chemistry,
Organic chemistry,
Polymer chemistry,
Polypropylene,
Metallocene catalyst,
Zeolites
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