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  Preparation and Morphology of Pyramidal MFI Single-Crystal Segments

Schmidt, W., Wilczok, U., Weidenthaler, C., Medenbach, O., Goddard, R., Buth, G., et al. (2007). Preparation and Morphology of Pyramidal MFI Single-Crystal Segments. The Journal of Physical Chemistry B, 111(48), 13538-13543. doi:10.1021/jp075934p.

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 Creators:
Schmidt, Wolfgang1, Author              
Wilczok, Ursula1, Author              
Weidenthaler, Claudia1, Author              
Medenbach, Olaf2, Author
Goddard, Richard3, Author              
Buth, Gernot4, Author
Cepak, Alexander1, Author              
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
2Institut für Geologie, Mineralogie und Geophysik, Ruhr-Universität Bochum, D-44780 Bochum, Germany, ou_persistent22              
3Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445625              
4ISS, Forschungszentrum Karlsruhe, Postfach 3640, D-76021 Karlsruhe, Germany , ou_persistent22              

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 Abstract: Single-crystal segments of tetra-n-propylammonium-templated Silicalite-1 and ZSM-5 were prepared by postsynthetic treatment of twinned MFI prisms. Microwave irradiation of the parent crystallites in alkaline solution containing hydrogen peroxide, followed by ultrasound treatment, led to disintegration of the zeolite prisms. The resulting wedge-shaped crystal segments proved to be single crystals of excellent crystallinity as shown by optical and X-ray investigations. The hydroxyl ions, compensating the positive charges of the tetrapropylammonium cations, were located by single-crystal structure refinement in template-containing Silicalite-1 and ZSM-5 but absent from the calcined samples.

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Language(s): eng - English
 Dates: 2007-07-272007-11-082007-12-01
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/jp075934p
 Degree: -

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Title: The Journal of Physical Chemistry B
  Other : J. Phys. Chem. B
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 111 (48) Sequence Number: - Start / End Page: 13538 - 13543 Identifier: ISSN: 1520-6106
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000293370_1