Citation
Ag. Potapov et al., Al-27 MAS NMR study of the interaction of supported Ziegler-Natta catalysts with organoaluminium co-catalyst in the presence of donors, J MOL CAT A, 158(1), 2000, pp. 457-460
Citations number
5
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
ISSN journal
13811169
→ ACNP
Volume
158
Issue
1
Year of publication
2000
Pages
457 - 460
Database
ISI
SICI code
1381-1169(20000908)158:1<457:AMNSOT>2.0.ZU;2-1
Abstract
Al-27 MAS NMR spectroscopy has been used to study the surface aluminium com
pounds formed upon interaction of the supported TiCl4/donor/MgCl2 catalyst
with AlEt3 in the presence or absence of the external donor. Similarly with
the catalyst without any donors [A.G. Potapov, V.V. Terskikh, V.A. Zakharo
v, G.D. Bukatov, J. Mol. Catal. A: Chem., 145 (1999) 147], the AlEt2Cl form
ed adsorbs on the catalyst surface. It was found that there is no influence
of internal and/or external donors on the state of aluminium in adsorbed A
lEt2Cl in spite of a decrease of the aluminium content in the presence of e
xternal donor. (C) 2000 Elsevier Science B.V. All rights reserved.