Environmentally benign synthesis of hydrotalcite-like materials for enhanced efficiency of aldol condensation reactions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43928271" target="_blank" >RIV/60461373:22310/24:43928271 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22320/24:43928271 RIV/60461373:22350/24:43928271
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0926860X23004866?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926860X23004866?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcata.2023.119506" target="_blank" >10.1016/j.apcata.2023.119506</a>

Result language
angličtina
Original language name
Environmentally benign synthesis of hydrotalcite-like materials for enhanced efficiency of aldol condensation reactions
Original language description
MgAl hydrotalcites (HTCs) are promising catalysts for biomass valorization applications. However, their production suffers from excessive wastewater generation while their application is limited by insufficient accessibility of active sites. Here, we change the paradigm of hydrotalcite synthesis by replacing the traditional co-precipitation by MgO impregnation with aluminum isopropoxide followed by calcination and (re)hydration. This synthesis affords surface HTC phase ensuring excellent accessibility to Brønsted basic sites. HTC supported on MgO surface (bulk Mg/Al = 20) exhibited same conversion and selectivity in aldol condensation of furfural with acetone as conventional HTC (Mg/Al = 3). Besides maximized efficiency of aluminum use to generate accessible Brønsted basic sites, the catalyst was stable in several consecutive catalytic experiments, if optimal rehydration conditions were applied. Moreover, the use of large quantities of water required for the co-precipitation-based method was avoided. This makes the new method superior also from green synthesis and sustainability point of view. © 2023 Elsevier B.V.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20704 - Energy and fuels

Project
<a href="/en/project/GA19-22978S" target="_blank" >GA19-22978S: Quantifying the basicity of reconstructed layered double hydroxides and correlating this with their performance in base-catalysed reactions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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