Titre :

Acidic/amphiphilic silica nanoparticles: new eco-friendly Pickering interfacial catalysis for biodiesel production

Auteur(s) :

Yang, Bingyu [Auteur]
Leclercq, Loïc [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Clacens, Jean-Marc [Auteur]
Nardello-Rataj, Véronique [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Titre de la revue :

Green Chem.

Numéro :

19

Pagination :

4552-4562

Date de publication :

2017-08-16

Discipline(s) HAL :

Chimie/Chimie organique

Résumé en anglais : [en]

Silica nanoparticles have been designed by surface modification to stabilize solventless catalytic Pickering emulsions for effective biodiesel production. With respect to this, and based on full physicochemical characterization ...
Lire la suite >Silica nanoparticles have been designed by surface modification to stabilize solventless catalytic Pickering emulsions for effective biodiesel production. With respect to this, and based on full physicochemical characterization of both nanoparticles and emulsions, an optimum balance between inert (i.e., alkyl chains) and active (i.e., sulfonic acids) surface functional groups to obtain amphiphilic and catalytic properties was achieved with C18-SiO2-SO3H (C18 : SO3H molar ratio = 54 : 46 with a degree of grafting of 48%). Under optimal conditions, biphasic transesterification of several vegetable oils with methanol in the presence of these modified silica catalysts proceeds at competitive rates: the conversion of triglycerides is higher than 92% at 90 °C after 12 h. In addition, the catalytic system was not deactivated by the presence of free fatty acids in the crude feedstock and the nanoparticles could be repeatedly used at least 5 times without any loss of activity.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

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

Équipe(s) de recherche :

Colloïdes catalyse oxydation (CÏSCO)

Date de dépôt :

2019-09-25T14:05:51Z