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RESEARCH PRODUCT
Design of stable mixed-metal MIL-101(Cr/Fe) materials with enhanced catalytic activity for the Prins reaction
Sergio NavalónMercedes AlvaroAndrea Santiago-portilloJean-marc GrenecheEffrosyni GkaniatsouChristian SerreNathalie SteunouClémence SicardMónica Giménez-marquésCristina Vallés-garcíaHermenegildo GarciaHermenegildo Garciasubject
Crystal structure010402 general chemistry01 natural sciencesHydrothermal circulationIonCatalysisQUIMICA ORGANICAQUIMICA ANALITICA[CHIM]Chemical SciencesGeneral Materials ScienceLewis acids and bases[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]MaterialsComputingMilieux_MISCELLANEOUSMossbauer spectrometry[PHYS]Physics [physics]010405 organic chemistryRenewable Energy Sustainability and the EnvironmentChemistryGeneral ChemistryPrins reaction0104 chemical sciencesChemical stabilityQuímica orgànicaNuclear chemistrydescription
[EN] This work highlights the benefit of designing mixed-metal (Cr/Fe) MOFs for enhanced chemical stability and catalytic activity. A robust and stable mixed-metal MIL-101(Cr/Fe) was prepared through a HF-free direct hydrothermal route with Fe(3+)content up to 21 wt%. The incorporation of Fe(3+)cations in the crystal structure was confirmed by(57)Fe Mossbauer spectrometry. The catalytic performance of the mixed metal MIL-101(Cr/Fe) was evaluated in the Prins reaction. MIL-101(Cr/Fe) exhibited a higher catalytic activity compared to MIL-101(Cr), improved chemical stability compared to MIL-101(Fe) and a higher catalytic activity for bulky substrates compared to MIL-100(Fe).In situinfra-red spectroscopy study suggests that the incorporation of Fe(3+)ions in MIL-101 structure leads to an increase in Lewis acid sites. It was thus concluded that the predominant role of Cr(3+)ions was to maintain the crystal structure, while Fe(3+)ions enhanced the catalytic activity.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-08-25 | Journal of Materials Chemistry A |