(Sn, Fe)/Mg/Zn/Al hydrotalcites as efficient catalysts for Baeyer-Villiger oxidation of aldehydes with cyclic structures: Role of composition and surface properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F25%3A43899180" target="_blank" >RIV/44555601:13440/25:43899180 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/25:43931822
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0926860X2500314X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926860X2500314X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcata.2025.120413" target="_blank" >10.1016/j.apcata.2025.120413</a>
Alternative languages
Result language
angličtina
Original language name
(Sn, Fe)/Mg/Zn/Al hydrotalcites as efficient catalysts for Baeyer-Villiger oxidation of aldehydes with cyclic structures: Role of composition and surface properties
Original language description
Mixed oxides derived from MgAl, ZnAl, and MgZnAl hydrotalcites were prepared and modified with tin and iron using co-precipitation and impregnation methods. Comprehensive characterization by XRD, XRF, BET, TPD, TGA, SEM, and EDX revealed that metal composition and method of modification strongly influenced crystallinity, surface area, and acid-base properties. Tin incorporation increased acidity and basicity, while iron reduced both, with structural impacts varying by matrix. The catalysts were tested in the Baeyer-Villiger oxidation of myrtenal and beta-cyclocitral. ZnAl-based oxides showed the highest conversion and selectivity (almost total conversion of both starting substances after 5 h of the reaction, with selectivity to nopinone reaching approximately 95 % and selectivity to the products of J3-cyclocitral oxidation around 70 %, predominantly yielding formate), while tin-modified MgAl catalysts provided stable performance with enhanced selectivity. Substrate structure significantly influenced product distribution, with myrtenal favouring oxidation-hydrolysis pathways and J3-cyclocitral undergoing additional reduction. Reusability studies demonstrated excellent stability of SnMgAl catalysts over three consecutive reaction cycles, with minimal leaching and full recovery of crystallinity after recalcination. In contrast, SnZnAl catalysts showed gradual deactivation, especially when tin was introduced via impregnation. The study highlights the importance of fine-tuning acid-base and structural properties of mixed oxides through metal incorporation and preparation method. The findings offer valuable insights into the rational design of robust and selective catalysts for Baeyer-Villiger oxidations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10401 - Organic chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Catalysis A-General
ISSN
0926-860X
e-ISSN
1873-3875
Volume of the periodical
2025
Issue of the periodical within the volume
704
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
15
Pages from-to
"nestrankovano"
UT code for WoS article
001519844300001
EID of the result in the Scopus database
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