High activity of Ga-containing nanosponge MTW zeolites in acylation of p-xylene
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10415699" target="_blank" >RIV/00216208:11310/20:10415699 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NCv3H.Vtxg" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NCv3H.Vtxg</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2019.09.045" target="_blank" >10.1016/j.cattod.2019.09.045</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
High activity of Ga-containing nanosponge MTW zeolites in acylation of p-xylene
Popis výsledku v původním jazyce
Aluminosilicate and gallosilicate MTW zeolites were prepared in the bulk and nanosponge form by direct hydrothermal synthesis. Designed materials were tested in acylation of p-xylene with benzoyl chloride and compared with large pore zeolite *BEA and medium pore zeolite MFI. Nanosponge MTW exhibited generally better performance than bulk MTW zeolites due to higher accessibility of the catalyst's active sites in nanosponge zeolite. Selective transformation of benzoyl chloride towards target 2,5-dimethylbenzophenone was achievable over nanosponge MTW zeolites. The gallosilicate nanosponge MTW exhibited significantly higher conversion (61%) of benzoyl chloride than its aluminosilicate counterpart (27%) with the same concentration of Bronsted acid sites (0.04 mmol/g). This result is clearly caused by the suitable strength of acid centres in Ga-MTW, which enables the sufficient activation of BzCl molecules as well as efficient desorption of formed polar products. Additionally, the gallosilicate MTW outperformed both conventional zeolites *BEA and MFI used as reference materials.
Název v anglickém jazyce
High activity of Ga-containing nanosponge MTW zeolites in acylation of p-xylene
Popis výsledku anglicky
Aluminosilicate and gallosilicate MTW zeolites were prepared in the bulk and nanosponge form by direct hydrothermal synthesis. Designed materials were tested in acylation of p-xylene with benzoyl chloride and compared with large pore zeolite *BEA and medium pore zeolite MFI. Nanosponge MTW exhibited generally better performance than bulk MTW zeolites due to higher accessibility of the catalyst's active sites in nanosponge zeolite. Selective transformation of benzoyl chloride towards target 2,5-dimethylbenzophenone was achievable over nanosponge MTW zeolites. The gallosilicate nanosponge MTW exhibited significantly higher conversion (61%) of benzoyl chloride than its aluminosilicate counterpart (27%) with the same concentration of Bronsted acid sites (0.04 mmol/g). This result is clearly caused by the suitable strength of acid centres in Ga-MTW, which enables the sufficient activation of BzCl molecules as well as efficient desorption of formed polar products. Additionally, the gallosilicate MTW outperformed both conventional zeolites *BEA and MFI used as reference materials.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10403 - Physical chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/GX19-27551X" target="_blank" >GX19-27551X: ADORable katalyzátory</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysis Today
ISSN
0920-5861
e-ISSN
—
Svazek periodika
345
Číslo periodika v rámci svazku
1. April 2020
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
6
Strana od-do
110-115
Kód UT WoS článku
000522039100013
EID výsledku v databázi Scopus
2-s2.0-85072780933