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Synthesis and characterization of IM-10: a new microporous silicogermanate with a novel topology

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Title: Synthesis and characterization of IM-10: a new microporous silicogermanate with a novel topology
Authors: Mathieu, Yannick1, Paillaud, Jean-Louis jl.paillaud@uha.fr, Caullet, Philippe1, Bats, Nicolas2
Source: Microporous & Mesoporous Materials. Oct2004, Vol. 75 Issue 1/2, p13-22. 10p.
Subjects: Ions, Fluids, Topology, Optics
Abstract: A novel GeO2 or (Si,Ge)O2 zeolite phase called IM-10 was obtained in the presence of the well-known hexamethonium ion as template and in fluoride media, from gels with Ge/Si molar ratios ⩾1. With decrease of the Ge/Si molar ratio, BEC-type zeolite and ITH-type zeolite were successively obtained. The recovered IM-10 samples were characterized by X-ray diffraction, SEM, elemental and thermal analysis, 19F MAS and 1H liquid (after dissolution of the samples in HF) spectroscopies. Due to the small crystal sizes (1–4 μm), the structure was determined from powder X-ray diffraction (of the GeO2 as-made sample) and refined by the Rietveld method. IM-10 is a new member of the clathrate family. It crystallizes in the tetragonal symmetry, the space group being P . The framework is made of F−-containing D4R units, bridged by GeO4 tetrahedra. The arrangement of the D4R units creates [62042] supercages, each of them occluding one hexamethonium cation. Structural similarities exist between ASU-9 (AST), ASU-7 (ASV) and the new IM-10 zeolite with a novel topology (UOZ). [Copyright &y& Elsevier]
Copyright of Microporous & Mesoporous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 14582421
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PubTypeId: academicJournal
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  Data: Synthesis and characterization of IM-10: a new microporous silicogermanate with a novel topology
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  Data: <searchLink fieldCode="AR" term="%22Mathieu%2C+Yannick%22">Mathieu, Yannick</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Paillaud%2C+Jean-Louis%22">Paillaud, Jean-Louis</searchLink><i> jl.paillaud@uha.fr</i><br /><searchLink fieldCode="AR" term="%22Caullet%2C+Philippe%22">Caullet, Philippe</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bats%2C+Nicolas%22">Bats, Nicolas</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Microporous+%26+Mesoporous+Materials%22">Microporous & Mesoporous Materials</searchLink>. Oct2004, Vol. 75 Issue 1/2, p13-22. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Ions%22">Ions</searchLink><br /><searchLink fieldCode="DE" term="%22Fluids%22">Fluids</searchLink><br /><searchLink fieldCode="DE" term="%22Topology%22">Topology</searchLink><br /><searchLink fieldCode="DE" term="%22Optics%22">Optics</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A novel GeO2 or (Si,Ge)O2 zeolite phase called IM-10 was obtained in the presence of the well-known hexamethonium ion as template and in fluoride media, from gels with Ge/Si molar ratios ⩾1. With decrease of the Ge/Si molar ratio, BEC-type zeolite and ITH-type zeolite were successively obtained. The recovered IM-10 samples were characterized by X-ray diffraction, SEM, elemental and thermal analysis, 19F MAS and 1H liquid (after dissolution of the samples in HF) spectroscopies. Due to the small crystal sizes (1–4 μm), the structure was determined from powder X-ray diffraction (of the GeO2 as-made sample) and refined by the Rietveld method. IM-10 is a new member of the clathrate family. It crystallizes in the tetragonal symmetry, the space group being P . The framework is made of F−-containing D4R units, bridged by GeO4 tetrahedra. The arrangement of the D4R units creates [62042] supercages, each of them occluding one hexamethonium cation. Structural similarities exist between ASU-9 (AST), ASU-7 (ASV) and the new IM-10 zeolite with a novel topology (UOZ). [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Microporous & Mesoporous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.micromeso.2004.06.023
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      – Code: eng
        Text: English
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        PageCount: 10
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        Type: general
      – SubjectFull: Fluids
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      – SubjectFull: Topology
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      – SubjectFull: Optics
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      – TitleFull: Synthesis and characterization of IM-10: a new microporous silicogermanate with a novel topology
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            NameFull: Mathieu, Yannick
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            NameFull: Paillaud, Jean-Louis
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            NameFull: Caullet, Philippe
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            NameFull: Bats, Nicolas
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              M: 10
              Text: Oct2004
              Type: published
              Y: 2004
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