Fast and Highly Selective Continuous-Flow ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Fast and Highly Selective Continuous-Flow Catalytic Hydrogenation of a Cafestol–Kahweol Mixture Obtained from Green Coffee Beans
Auteur(s) :
Lima, Fernanda Alves [Auteur]
Bezerra, Marco A. M. [Auteur]
Souza, Rodrigo [Auteur]
Itabaiana, Ivaldo [Auteur]
Haynes, Tommy [Auteur]
Hermans, Sophie [Auteur]
Wojcieszak, Robert [Auteur]
Novaes, Fábio Junior M. [Auteur]
Rezende, Claudia Moraes [Auteur]
Bezerra, Marco A. M. [Auteur]
Souza, Rodrigo [Auteur]
Itabaiana, Ivaldo [Auteur]
Haynes, Tommy [Auteur]
Hermans, Sophie [Auteur]
Wojcieszak, Robert [Auteur]
Novaes, Fábio Junior M. [Auteur]
Rezende, Claudia Moraes [Auteur]
Titre de la revue :
Acs Omega
Nom court de la revue :
ACS Omega
Numéro :
5
Pagination :
25712-25722
Éditeur :
American Chemical Society (ACS)
Date de publication :
2020-09-28
Résumé en anglais : [en]
This work investigates batch and continuous-flow heterogeneous catalytic hydrogenation of a mixture of cafestol and kahweol (C&K) to obtain pure cafestol. These diterpenes were extracted from green coffee beans, and ...
Lire la suite >This work investigates batch and continuous-flow heterogeneous catalytic hydrogenation of a mixture of cafestol and kahweol (C&K) to obtain pure cafestol. These diterpenes were extracted from green coffee beans, and hydrogenation was performed using well-established palladium catalysts (Pd/C, Pd/CaCO3, Pd/BaSO4, and Pd/Al2O3) and a carbon black-supported Pd catalyst coated by a covalently tethered SiO2 shell with mesoporous texture (Pd/CB@SiO2), all partially deactivated with quinoline. Pd/C 10% poisoned with 1 wt % quinoline gave the best result for batch reaction, producing cafestol from kahweol with high selectivity (>99%) after 10 min. Excellent selectivity was also obtained with the catalyst Pd/CB@SiO2 with only 1% Pd. In addition, Pd/C-quinoline adapted for continuous-flow experiments exhibited the best catalytic activity, also providing cafestol with excellent selectivity (>99%) after 9.8 s.Lire moins >
Lire la suite >This work investigates batch and continuous-flow heterogeneous catalytic hydrogenation of a mixture of cafestol and kahweol (C&K) to obtain pure cafestol. These diterpenes were extracted from green coffee beans, and hydrogenation was performed using well-established palladium catalysts (Pd/C, Pd/CaCO3, Pd/BaSO4, and Pd/Al2O3) and a carbon black-supported Pd catalyst coated by a covalently tethered SiO2 shell with mesoporous texture (Pd/CB@SiO2), all partially deactivated with quinoline. Pd/C 10% poisoned with 1 wt % quinoline gave the best result for batch reaction, producing cafestol from kahweol with high selectivity (>99%) after 10 min. Excellent selectivity was also obtained with the catalyst Pd/CB@SiO2 with only 1% Pd. In addition, Pd/C-quinoline adapted for continuous-flow experiments exhibited the best catalytic activity, also providing cafestol with excellent selectivity (>99%) after 9.8 s.Lire moins >
Comité de lecture :
Oui
Audience :
Non spécifiée
Établissement(s) :
Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois
CNRS
Centrale Lille
ENSCL
Univ. Artois
Collections :
Équipe(s) de recherche :
Valorisation des alcanes et de la biomasse (VAALBIO)
Date de dépôt :
2020-11-25T12:08:01Z
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