Issue 41, 2005
From the journal:

Journal of Materials Chemistry

Heterogenization of a manganese(ii) acetonitrile complex on AlMCM-41 and AlMCM-48 molecular sieves by ion exchange

Ayyamperumal Sakthivel,a   Ahmed K. Hijazi,a   Hui Yee Yeong,ab   Klaus Kőhler,a   Oskar Nuykenb  and  Fritz E. Kühn*a  

* Corresponding authors

a Lehrstuhl für Anorganische Chemie der Technischen Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
E-mail: fritz.kuehn@ch.tum.de
Fax: +49 89 28913473

b Lehrstuhl für Makromolekulare Stoffe der Technischen Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany

Abstract

An acetonitrile complex of composition [Mn(NCCH3)6][B(C6F5)4]2 (1) is grafted on Na-AlMCM-41/48 and H-AlMCM-41/48 by ion exchange. A metal loading of 0.25–0.6 wt% is achieved; the grafting of complex 1 is found to yield higher loading on Na-AlMCM-41/48 compared to H-AlMCM-41/48. Powder X-ray diffraction, N2 adsorption–desorption and TEM analysis of the grafted materials confirm the retention of long range ordering of the materials throughout the grafting process. FT-IR, EPR, TG-MS and elemental analyses confirm the successful grafting of the Mn(II) complex in the channels of the mesoporous materials, retaining the octahedral nitrile environment around the Mn2+ cation. The obtained materials are applied as heterogeneous initiators for the polymerization of isobutene.

Graphical abstract: Heterogenization of a manganese(ii) acetonitrile complex on AlMCM-41 and AlMCM-48 molecular sieves by ion exchange

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Article information

DOI
https://doi.org/10.1039/B508533K
Article type
Paper
Submitted
16 Jun 2005
Accepted
09 Aug 2005
First published
31 Aug 2005

J. Mater. Chem., 2005,15, 4441-4445

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Heterogenization of a manganese(II) acetonitrile complex on AlMCM-41 and AlMCM-48 molecular sieves by ion exchange

A. Sakthivel, A. K. Hijazi, H. Y. Yeong, K. Kőhler, O. Nuyken and F. E. Kühn, J. Mater. Chem., 2005, 15, 4441 DOI: 10.1039/B508533K

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