Incorporation of Al at ZSM-5 hydrothermal synthesis. Tuning of Al pairs in the framework

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00433272" target="_blank" >RIV/61388955:_____/15:00433272 - isvavai.cz</a>
Alternative codes found
RIV/62243136:_____/15:MPO11CL
Result on the web
<a href="http://dx.doi.org/10.1016/j.micromeso.2014.09.056" target="_blank" >http://dx.doi.org/10.1016/j.micromeso.2014.09.056</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2014.09.056" target="_blank" >10.1016/j.micromeso.2014.09.056</a>

Result language
angličtina
Original language name
Incorporation of Al at ZSM-5 hydrothermal synthesis. Tuning of Al pairs in the framework
Original language description
The effect of Si- (TEOS, Tixosil and Na-silicate), Al- (AlCl3, Al(NO3)3, NaAlO2, Al(OH)3 and metallic Al) and Na-reactants (NaCl, NaOH, Na3PO4, NaAlO2) in the presence of TPAOH was investigated with regard to the networking of Si and Al atoms in gels andincorporation of Al atoms and their distribution in the hydrothermally synthesized ZSM-5 framework. At Si/Alprod from 12 to 60 the Al?Si?Si?Al sequences (Al pairs) in one 6MR and single Al atoms located in different rings were the most populated (>99% of total Al), reaching 4?70% of the Al atoms in Al pairs in 6MRs adjacent to TPA+. It has been shown that Na+ ions stabilize single SiAlO4 units in Si?Al gels network and lead to a high relative degree of Al incorporation and high population of single Alatoms charge-balanced by TPA+ and Na+ ions. The occurrence of Al pairs in 6MRs is suggested to be controlled by the positive charge on the N atom of TPA+ resulting from its polarization by OH and other anions present. The decreasing polar
Czech name
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Czech description
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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
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Project
<a href="/en/project/GAP106%2F11%2F0624" target="_blank" >GAP106/11/0624: New category of zeolites with pentasil ring structure: Catalytic processes on zeolites with controlled distribution of aluminum atoms in the framework</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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