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Open-Framework Copper Titanosilicates

Published online by Cambridge University Press:  01 February 2011

Xiqu Wang ,
Lumei Liu ,
Lingbao Wang  and
Allan. J. Jacobson
Xiqu Wang
Affiliation:
Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, TX 77204–5003
Lumei Liu
Affiliation:
Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, TX 77204–5003
Lingbao Wang
Affiliation:
Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, TX 77204–5003
Allan. J. Jacobson
Affiliation:
Department of Chemistry and Center for Materials Chemistry, University of Houston, Houston, TX 77204–5003
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Abstract

Four open-framework copper titanosilicates have been synthesized by hydrothermal techniques. The crystal structure of Phase 1 determined from single crystal X-ray data is closely similar to that reported for the titanosilicate ETS-4 with ca. one third TiO5 pyramids randomly replaced by CuO4 squares. Phase 2 also has the ETS-4 structure but all the TiO5 pyramids are replaced by CuO4 squares which are not randomly disordered. Phase 3 with the composition Na8CuTi3Si16O43 has the same structure as the mineral narsarsukite, a titanosilicate closely related to the microporous titanosilicate ETS-10. Narsarsukite and ETS-10 have the same straight single chains of TiO6 octahedra which are partially substituted by CuO4 squares in 3. Phase 4 with the composition K4CuTiSi8O21 contains CuO4 squares and TiO5 tetragonal pyramids that crosslink a new type of silicate double layer to form an open framework.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF3.2
Copyright
Copyright © Materials Research Society 2005

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References

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