Desilication of SSZ-33 zeolite ? Post-synthesis modification of textural and acidic properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00437627" target="_blank" >RIV/61388955:_____/15:00437627 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.046" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2014.07.046</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2014.07.046" target="_blank" >10.1016/j.cattod.2014.07.046</a>

Result language
angličtina
Original language name
Desilication of SSZ-33 zeolite ? Post-synthesis modification of textural and acidic properties
Original language description
Desilication conditions (concentration of NaOH, duration of the treatment) of SSZ-33 zeolite (CON topology) were investigated in respect to the textural and acidic properties of the obtained materials. As-synthesized borosilicate SSZ-33 was transformed by isomorphous substitution to Al-form. The alkaline treatment of Al-SSZ-33 zeolite resulted in the formation of mesopores and enhanced accessibility of Br?nsted acid sites. The increase in the mesopore volume and also changes in the concentration of acidsites depends mainly on the concentration (pH) of the treatment. Simultaneously, the increase in the pH of the alkaline solution led to the slight increase in Br?nsted acid sites and substantial decrease in the micropore volume more than 50%, in comparison with the parent material while the volume of mesopores increased significantly. All desilicated SSZ-33 zeolites are characterized by a broad mesopore-size distribution in the range of 5?20 nm with the maximum depending both on the har
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/GP13-17593P" target="_blank" >GP13-17593P: Preparation of Novel Structure-Directing Agents for the Synthesis of Zeolites</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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