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Post-Synthesis Stabilization of Germanosilicate Zeolites ITH, IWW, and UTL by Substitution of Ge for Al

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00467334" target="_blank" >RIV/61388955:_____/16:00467334 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1002/chem.201603434" target="_blank" >http://dx.doi.org/10.1002/chem.201603434</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1002/chem.201603434" target="_blank" >10.1002/chem.201603434</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Post-Synthesis Stabilization of Germanosilicate Zeolites ITH, IWW, and UTL by Substitution of Ge for Al

  • Original language description

    Germanosilicate zeolites often suffer from low hydrothermal stability due to the high content of Ge. Herein, we investigated the post-synthesis introduction of Al accompanied by stabilization of selected germanosilicates by degermanation/alumination treatments. The influence of chemical composition and topology of parent germanosilicate zeolites (ITH, IWW, and UTL) on the post-synthesis incorporation of Al was studied. Alumination of ITH (Si/Ge=2-13) and IWW (Si/Ge=3-7) zeolites resulted in the partial substitution of Ge for Al (up to 80%), which was enhanced with a decrease of Ge content in the parent zeolite. In contrast, in extra-large pore zeolite UTL (Si/Ge=4-6) the hydrolysis of the interlayer Ge-O bonds dominated over substitution. The stabilization of zeolite UTL was achieved using a novel two-step degermanation/alumination procedure by the partial post-synthesis substitution of Ge for Si followed by alumination. This new method of stabilization and incorporation of strong acid sites may extend the utilization of germanosilicate zeolites, which has been until now been limited.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GP14-30898P" target="_blank" >GP14-30898P: Understanding of catalytic activity of novel isomorphously substituted microporous germanosilicates</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Chemistry A European Journal

  • ISSN

    1521-3765

  • e-ISSN

  • Volume of the periodical

    22

  • Issue of the periodical within the volume

    48

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    10

  • Pages from-to

    17377-17386

  • UT code for WoS article

    000387854800036

  • EID of the result in the Scopus database

    2-s2.0-84991648617