Résumé
The aerosol-assisted sol-gel process was used to synthesize in a straightforward one-pot procedure a series of methyl-functionalized tin silicates with different degrees of methylation. The successful incorporation of isolated Sn as single site within the silica framework was confirmed via 119Sn solid-state NMR measurements, while 29Si and 13C solid-state magic-angle-spinning NMR experiments revealed a degree of methylation close to the theoretical value, hence proving the efficacy of the adopted cosynthetic approach. These materials were tested as catalysts in the synthesis of ethyl lactate from dihydroxyacetone and ethanol. The methylated solids display enhanced performances in terms of both activity and selectivity compared to the nonmethylated analogues, highlighting a strong beneficial role of surface hydrophobicity. Under proper conditions a total conversion and a selectivity higher than 95% were achieved. Moreover, the efficient separation and reuse of the heterogeneous catalyst as well as the possibility of an easily recover of the reaction solvent result in a very low waste production protocol with an exceptionally low E-factor.
langue originale | Anglais |
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Pages (de - à) | 14095-14103 |
Nombre de pages | 9 |
journal | ACS Sustainable Chemistry and Engineering |
Volume | 6 |
Numéro de publication | 11 |
Les DOIs | |
Etat de la publication | Publié - 5 nov. 2018 |
Empreinte digitale
Examiner les sujets de recherche de « Mesoporous Methyl-Functionalized Sn-Silicates Generated by the Aerosol Process for the Sustainable Production of Ethyl Lactate ». Ensemble, ils forment une empreinte digitale unique.Équipement
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Morphologie - Imagerie
Francesca Cecchet (!!Manager) & Henri-Francois Renard (!!Manager)
Plateforme technologique Morphologie, imagerieEquipement/installations: Plateforme technolgique
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Physico-chimie et caractérisation (PC2)
Johan Wouters (!!Manager) & Carmela Aprile (!!Manager)
Plateforme technologique Caracterisation physico-chimiquesEquipement/installations: Plateforme technolgique
Thèses de l'étudiant
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Porous structured materials embedding tin and gallium as single-site for catalytic applications: effect of the hydrophobic/hydrophilic balance
Auteur: VIVIAN, A., 14 mai 2020Superviseur: APRILE, C. (Promoteur), Debecker, D. P. (Personne externe) (Copromoteur), SPORKEN, R. (Président), Fiorilli, S. (Personne externe) (Jury), Gaigneaux, E. M. (Personne externe) (Jury) & Devillers, M. (Personne externe) (Jury)
Student thesis: Doc types › Docteur en Sciences
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