Pickering emulsion catalysis11/6/2023 ![]() To apply, please send your cover letter and CV to the IFPEN supervisor indicated here above.The versatility of colloidal particles endows the particle stabilized or Pickering emulsions with unique features and can potentially enable the fabrication of a wide variety of derived materials. Other requirements Knowledge of catalysis/biocatalysis appreciated.Language requirements Fluency in French or English, willingness to learn French.Academic requirements University Master degree in relevant disciplines: Colloids, soft matter, physico-chemistry of interfaces, formulation….Employer IFPEN, Rueil-Malmaison, France.Duration and start date 3 years, starting in fourth quarter 2023.PhD location Physical Chemistry of Complex Materials and Fluids, Rueil-Malmaison, France.IFPEN supervisor Dr, HDR, DALMAZZONE Christine, Applied Physical Chemistry and Mechanics,,.Academic supervisor Dr, HDR, DALMAZZONE Christine, IFPEN,.Keywords: Water-in-water emulsion, Pickering, nanoparticles, interfaces, catalysis In this thesis, we propose to experimentally study the mechanisms of stabilization of Pickering w/w emulsions (impact of the nature, morphology, and wettability of the particles) in order to acquire a better control of their formulation for their implementation in catalytic/enzymatic processes. On the other hand, an effective way to block the coalescence of w/w emulsions is to use solid particles. In particular, it is impossible for small hydrophilic surfactant molecules to adsorb at the interface. However, because of the ultra-low interfacial tensions that characterize these systems, it is particularly difficult to stabilize the emulsions. They are particularly suitable for the recovery of products in biotechnology (such as sugars). These mixtures are mainly used for the extraction of macromolecules in complex biological mixtures, the separation of cells, membranes, proteins, and other biomolecules. These emulsions are formed from aqueous solutions of two incompatible water-soluble molecules in solution, such as mixtures of polymers or polymer/electrolyte. Water-in-water emulsions are colloidal dispersions of two immiscible aqueous phases at thermodynamic equilibrium. In a context of decarbonization and transition to more environmentally friendly processes, we want to explore new applications in conditions free of any solvent other than water. In recent years, the applications of these emulsions in catalysis have been increasingly studied, for the development of continuous two-phase processes. Because of their extreme stability to coalescence, they find numerous applications in several industries (agrifood, pharmaceuticals, chemical industry). Unlike conventional emulsions stabilized by surfactant molecules, Pickering emulsions are stabilized by nanoparticles. Accreditations to supervise doctoral research.Centre de formation des apprentis (CFA) IFP School.Making a success of the energy transition: IFP School's strengths.Accreditation of prior experience and learning (VAE).Geosciences for the energy system transition. ![]()
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