Issue 10, 2002
From the journal:

New Journal of Chemistry

Polymer-incorporated iron catalysts for ethylene polymerization—a new approach to immobilize iron olefin catalysts on polystyrene chains

Changkun Liua  and  Guoxin Jin*ab  

* Corresponding authors

a State Key Laboratory of Macromolecular Physics and Chemistry, Changchun Institute of Applied Chemistry, Changchun, China

b Chemistry Department, Fudan University, Shanghai, China
E-mail: gxjin@fudan.edu.cn
Fax: +86-21-65641740
Tel: +86-21-65643776

Abstract

2,6-Bis(imino)pyridyl iron catalysts bearing allyl groups [ArN[double bond, length as m-dash]C(Me)][Ar′N[double bond, length as m-dash]C(Me)]C5H3NFeCl2 (Ar = Ar′ = 4-allyl-2,6-(i-Pr)2C6H2 (Cat-1); Ar = 2,6-(i-Pr)2C6H3, Ar′ = 4-allyl-2,6-(i-Pr)2C6H3 (Cat-2)) have been synthesized and characterized. The corresponding polymer-incorporated iron catalysts PC-1, PC-2 and their SiO2-supported core–shell structure catalysts SC-1 and SC-2 were obtained by the co-polymerization of the olefin groups of Cat-1 or Cat-2 with styrene in the presence of a radical initiator. All three types of catalysts (Cat-1 and Cat-2; PC-1 and PC-2; SC-1 and SC-2) have been investigated for ethylene polymerization. As a result, these catalysts were found to exhibit high activity using modified methylaluminoxane (MMAO) as a co-catalyst. Among them, the polymer-incorporated SiO2 core–shell catalysts displayed very high activity (∼3181 g (mmol Fe)−1 h−1) with product molecular weights in the range 25–93 × 104. The particle morphology of polyethylene produced by the core–shell structure catalysts (SC-1 and SC-2) was improved.

Graphical abstract: Polymer-incorporated iron catalysts for ethylene polymerization—a new approach to immobilize iron olefin catalysts on polystyrene chains

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Article information

DOI
https://doi.org/10.1039/B202715C
Article type
Paper
Submitted
14 Mar 2002
Accepted
16 May 2002
First published
20 Aug 2002

New J. Chem., 2002,26, 1485-1489

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Polymer-incorporated iron catalysts for ethylene polymerization—a new approach to immobilize iron olefin catalysts on polystyrene chains

C. Liu and G. Jin, New J. Chem., 2002, 26, 1485 DOI: 10.1039/B202715C

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