Aldol condensation of furfural with acetone over ion-exchanged and impregnated potassium BEA zeolites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22350%2F16%3A43901751" target="_blank" >RIV/60461373:22350/16:43901751 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/16:00472522 RIV/62243136:_____/16:N0000005 RIV/00216275:25310/16:39902167
Result on the web
<a href="http://www.sciencedirect.com.ezproxy.vscht.cz/science/article/pii/S1381116916303867" target="_blank" >http://www.sciencedirect.com.ezproxy.vscht.cz/science/article/pii/S1381116916303867</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.molcata.2016.09.014" target="_blank" >10.1016/j.molcata.2016.09.014</a>

Result language
angličtina
Original language name
Aldol condensation of furfural with acetone over ion-exchanged and impregnated potassium BEA zeolites
Original language description
Potassium-containing BEA zeolites were prepared by ion-exchange from NH4-BEA with potassium nitrateaqueous solution or ion-exchange combined with impregnation. The samples were used as basic catalystsfor aldol condensation of furfural and acetone studied in a batch reactor at 100°C, autogenous pressureand a reaction time of 2 h. To establish a relationship between physico-chemical properties and catalyticbehavior of BEA zeolites, the samples were characterized by XRD, N2adsorption, FTIR, calorimetry, andTGA. The ion-exchanged K-BEA catalysts exhibited low activity in the aldol condensation because of aweak strength of intrinsic basic sites. In contrast, the samples prepared by ion exchange combined withimpregnation possessed strong basic sites, plausibly K2O clusters, and demonstrated appreciable activityin the aldol condensation. TGA results proved that, in contrast to acidic zeolites, basic sites of impregnatedBEA samples hardly contribute to the formation of heavy carbonaceous deposits during the reaction whatcould be advantageous for the stable behavior of catalysts.
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
CA - Inorganic chemistry
OECD FORD branch
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Project
<a href="/en/project/GBP106%2F12%2FG015" target="_blank" >GBP106/12/G015: Intelligent design of nanoporous adsorbents and catalysts</a><br>
Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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