Location of Framework Al Atoms in the Channels of ZSM-5: Effect of the (Hydrothermal) Synthesis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00458272" target="_blank" >RIV/61388955:_____/16:00458272 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/chem.201503758" target="_blank" >http://dx.doi.org/10.1002/chem.201503758</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201503758" target="_blank" >10.1002/chem.201503758</a>
Alternative languages
Result language
angličtina
Original language name
Location of Framework Al Atoms in the Channels of ZSM-5: Effect of the (Hydrothermal) Synthesis
Original language description
27Al 3Q MAS NMR and UV/Vis spectroscopy with bare CoII ions as probes of Al pairs in the zeolite framework were employed to analyze the location of framework Al atoms in the channel system of zeolite ZSM-5. Furthermore, the effect of Na+ ions together with tetrapropylammonium cation (TPA+) in the ZSM-5 synthesis gel on the location of Al in the channel system was investigated. Zeolites prepared using exclusively TPA+ as a structure-directing agent (i.e., in the absence of Na+ ions) led to 55–90 % of Al atoms located at the channel intersection, regardless the presence or absence of Al pairs [AlO(SiO)2Al sequences in one ring] in the zeolite framework. The presence of Na+ ions in the synthesis gel did not modify the Al location at the channel intersection (55–95 % of Al atoms) and led only to changes in i) the distribution of framework Al atoms between Al pairs (decrease) and single isolated Al atoms (increase), and ii) the siting of Al in distinguishable framework tetrahedral sites.
Czech name
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Czech description
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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
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Result continuities
Project
<a href="/en/project/GA15-13876S" target="_blank" >GA15-13876S: Zeolites with (semi)monomodal aluminum distribution in the framework</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
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Volume of the periodical
22
Issue of the periodical within the volume
12
Country of publishing house
DE - GERMANY
Number of pages
5
Pages from-to
3937-3941
UT code for WoS article
000372526500004
EID of the result in the Scopus database
2-s2.0-84960152991