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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

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Svazek periodika

168

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

433-440

Kód UT WoS článku

000289704400050

EID výsledku v databázi Scopus

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