有哪些信誉好的足球投注网站a protons exchanged montmorillonite clay as an efficient catalyst for the reaction of isobutylene polymerization质子交换蒙脱石粘土作为异丁烯聚合反应的高效催化剂.pdfVIP
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a protons exchanged montmorillonite clay as an efficient catalyst for the reaction of isobutylene polymerization质子交换蒙脱石粘土作为异丁烯聚合反应的高效催化剂
Int. J. Mol. Sci. 2002, 3, 790-800
International Journal of
Molecular Sciences
ISSN 1422-0067
© 2002 by MDPI
/ijms/
A Protons Exchanged Montmorillonite Clay as an Efficient
Catalyst for the Reaction of Isobutylene Polymerization
Amine Harrane, Rachid Meghabar, Mohammed Belbachir
Laboratoire de Chimie des Polymères, Département de Chimie, Faculté des Sciences, Université
d’Oran Es-Senia BP N° 1524 El M’Naouar, 31000 Oran ALGERIE
Fax: 00213 41 41 60 21. E-Mail: amineharrane@yahoo.fr
Received: 27 April 2002 / Accepted: 13 May 2002 / Published: 31 July 2002
Abstract: “Maghnite” a montmorillonite sheet silicate clay, exchanged with protons to
produce “H-Maghnite” is an efficient catalyst for cationic polymerization of many vinylic
and heterocyclic monomers (Belbachir, M. U.S. Patent. 066969.0101 –2001). The structure
compositions of both “Maghnite” and “H-Maghnite” have been developed. Isobutylene
monomer, wich is polymerizable only by cationic process (Odian,G. La
Polymerisation :principes et Applications ; Ed.Technica: New York, 1994; pp 222-226), was
used to elucidate the cationic character of polymerization.
The polymerization was performed under suitable conditions at isobutylene vaporization
temperature (–7°C). Experiments revealed that polymerization induced by “H-Maghnite”
proceed in bulk and in solution. In contrast t
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