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Surface Acidic Sites on Supported Titanium-Magnesium Catalyst for Propylene Polymerization: ESR Study via Adsorption of Stable Nitroxyl Radicals Full article

Journal Macromolecular Chemistry and Physics
ISSN: 1022-1352 , E-ISSN: 1521-3935
Output data Year: 1997, Volume: 198, Number: 9, Pages: 2867-2873 Pages count : 7 DOI: 10.1002/macp.1997.021980916
Tags CHLORIDE; CENTERS; TEMPON; STATE
Authors Potapov Alexandr G. 1 , Zakharov Vladimir A. 1 , Mikenas Tatijana B. 1 , Sergeev Sergeyi A. 1 , Volodin Alexandr M. 1
Affiliations
1 Boreskov Institute of Catalysis, Novosibirsk 630090, Russia

Abstract: ESR was used for studying the interaction between the stable nitroxyl radical TEMPO (2,2,6,6-tetramethylpyperidin-1-oxyl) and the titanium-magnesium catalysts TiCl4/MgCl2 and TiCl4/MgCl2 · nD (D is either diisobutyl phthalate or 2,2-diisobutyl-1,3-dimethoxypropane), as well as TiCl4/MgCl2 · nD treated with triethylaluminium. In all cases, only part of the surface titanium complexes (18–53 mol-%) exhibit Lewis acid properties and can interact with TEMPO. The portion of titanium complexes with acidic properties depends on the composition and preparation of the catalysts, and it decreases upon treatment with triethylaluminium.
Cite: Potapov A.G. , Zakharov V.A. , Mikenas T.B. , Sergeev S.A. , Volodin A.M.
Surface Acidic Sites on Supported Titanium-Magnesium Catalyst for Propylene Polymerization: ESR Study via Adsorption of Stable Nitroxyl Radicals
Macromolecular Chemistry and Physics. 1997. V.198. N9. P.2867-2873. DOI: 10.1002/macp.1997.021980916 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: Nov 6, 1996
Accepted: Feb 5, 1997
Published print: Sep 1, 1997
Published online: Mar 12, 2003
Identifiers:
Web of science: WOS:A1997XW91500016
Scopus: 2-s2.0-0041026622
Elibrary: 13251454
Chemical Abstracts: 1997:611626
Chemical Abstracts (print): 127:278528
OpenAlex: W2034934479
Citing:
DB Citing
Web of science 6
Scopus 7
Elibrary 7
OpenAlex 4
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