Preparation of Al-SBA-15 Pellets with Low Amount of Additives: Effect of Binder Content on Texture and Mechanical Properties. Application to Friedel-Crafts Alkylation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F11%3A00357572" target="_blank" >RIV/67985858:_____/11:00357572 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cej.2010.12.079" target="_blank" >http://dx.doi.org/10.1016/j.cej.2010.12.079</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2010.12.079" target="_blank" >10.1016/j.cej.2010.12.079</a>

Result language
angličtina
Original language name
Preparation of Al-SBA-15 Pellets with Low Amount of Additives: Effect of Binder Content on Texture and Mechanical Properties. Application to Friedel-Crafts Alkylation
Original language description
Colloidal silica sol was used as a binder for the preparation of Al-SBA-15 pellets. Only 18 wt. % of silica was sufficient to form pellets that possessed mechanical strength comparable with industrial catalysts. Moreover, these pellets exhibited only minor changes in texture parameters in comparison with parent powder (the decrease of mesopore surface area and mesopore volume was not higher than 25 %). However, even such small amount of binder caused a substantial reduction of reaction rate in Friedel-Crafts alkylation of toluene with benzyl alcohol. The time to reach 50 % conversion of benzyl alcohol was for the pellets containing 18 wt. % of silica about five times higher in comparison with binder-free pellets. This decrease in the reaction rate wasdue to a partial decay of acid sites by alkali ions present in the binder solution and increased diffusion hindrances inside catalyst pellets.
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
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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