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Titolo:
Reactions of bis(cyclopentadienyl)zirconium dichloride with porous silica surface
Autore:
Kroger-Laukkanen, M; Peussa, M; Leskela, M; Niinisto, L;
Indirizzi:
Univ Helsinki, Dept Chem, FIN-00100 Helsinki, Finland Univ Helsinki Helsinki Finland FIN-00100 em, FIN-00100 Helsinki, Finland Helsinki Univ Technol, Inorgan & Analyt Chem Lab, FIN-02015 Espoo, FinlandHelsinki Univ Technol Espoo Finland FIN-02015 , FIN-02015 Espoo, Finland
Titolo Testata:
APPLIED SURFACE SCIENCE
fascicolo: 3-4, volume: 183, anno: 2001,
pagine: 290 - 300
SICI:
0169-4332(20011128)183:3-4<290:ROBDWP>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPPORTED ZIRCONOCENE CATALYSTS; METALLOCENE CATALYSTS; OLEFIN POLYMERIZATION; GAMMA-ALUMINA; CHEMISTRY; PROPENE; ZRCL4; TRIALKYLALUMINUMS; COPOLYMERIZATION; TICL4;
Keywords:
metallocene; porous silica; atomic layer epitaxy;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Leskela, M Univ Helsinki, Dept Chem, POB 55, FIN-00100 Helsinki, Finland Univ Helsinki POB 55 Helsinki Finland FIN-00100 sinki, Finland
Citazione:
M. Kroger-Laukkanen et al., "Reactions of bis(cyclopentadienyl)zirconium dichloride with porous silica surface", APPL SURF S, 183(3-4), 2001, pp. 290-300

Abstract

Surface reactions between bis(cyclopentadienyl)zirconium dichloride (Cp2ZrCl2) and porous SiO2 surface were studied by preparing series of samples bysaturated gas-solid reactions in an atomic layer epitaxy (ALE) reactor. Partially dehydroxylated silica supports were obtained by preheating. Cp2ZrCl2 reacted mainly with the isolated OH groups. The availability of OH groupsinfluenced the bonding mode of the zirconocene complex which was mainly singly bonded on silica preheated at 600 degreesC, while preheating at 350 degreesC resulted in multiple bonding as revealed by NMR and elemental analyses. There was no evidence for surface alkylation or chlorination. (C) 2001 Elsevier Science B.V All rights reserved.

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Documento generato il 28/09/20 alle ore 02:41:00