Title :

Fast and Highly Selective Continuous-Flow Catalytic Hydrogenation of a Cafestol–Kahweol Mixture Obtained from Green Coffee Beans

Author(s) :

Lima, Fernanda Alves [Auteur]
Bezerra, Marco A. M. [Auteur]
Souza, Rodrigo [Auteur]
Itabaiana, Ivaldo [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Haynes, Tommy [Auteur]
Institut de la matière condensée et des nanosciences / Institute of Condensed Matter and Nanosciences [IMCN]
Hermans, Sophie [Auteur]
Institut de la matière condensée et des nanosciences / Institute of Condensed Matter and Nanosciences [IMCN]
Wojcieszak, Robert [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Novaes, Fábio Junior M. [Auteur]
Rezende, Claudia Moraes [Auteur]

Journal title :

Acs Omega

Abbreviated title :

ACS Omega

Volume number :

5

Pages :

25712-25722

Publisher :

American Chemical Society (ACS)

Publication date :

2020-09-28

HAL domain(s) :

Chimie/Catalyse

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Valorisation des alcanes et de la biomasse (VAALBIO)

Submission date :

2020-11-25T12:08:01Z
2020-11-25T18:16:34Z