The ECO-PLAN project aims at developing an eco-efficient process for the synthesis of bio sourced surfactants having applications in the domains of detergent, personal care or pharmaceutics. To reach this goal, the competences of three partners (two research laboratories and one company) will contribute in complementary ways to the transformation of glycerol and polyglycerol (2 to 4 monomers) into amphiphilic compounds. This transformation of an industrial waste (the glycerol) into value added compounds will be performed in a two-step process: the selective oxidation of glycerol and polyglycerol into aldehyde or ketone compounds will be electrochemically controlled leading to the co-production of hydrogen; both these resulting reaction products will be used to perform a reductive amination of aldehydes or ketones on palladium catalysts in presence of hydrogen.
The investigations on palladium based electrocatalysts for the glycerol oxidation and non-platinum group transition metals for the hydrogen evolution reaction will be carried out at IC2MP on materials synthesized by colloidal wet chemistry methods. The results from this first study in three electrode cell (with in situ infrared characterization of catalyst selectivity) and small electrolysis cell (25 cm2 with HPLC and NMR reaction product analysis) will allow the selection of interesting catalyst structures and compositions for their further preparation by plasma sputtering method at GREMI. This method allows the deposition of low metal loading catalysts on small electrodes (for validation in a three electrode cell) as well as on larger diffusion layers (25 cm2 to 50 cm2) for their implementation into electrolysis cell. The catalytic reductive amination will be performed at IC2MP in order to optimize the catalyst substrate modification for better catalyst dispersion in the reaction medium and to optimize the reaction conditions.
The optimized conditions and materials for these two processes will be integrated in a global system at VALAGRO consisting in a modular electrochemical reactor (with a working surface up to 0.1 m2) for the glycerol and polyglycerol transformation with co-production of hydrogen and a catalytic reactor for the reductive amination of aldehydes and/or ketones produced in the previous step fed with the co-produced hydrogen.
The results obtained from implementation of this two-step system will be used for the determination of manufacturing cost (Operational Expense, OPEX) and magnitude of investments (Capital Expenditure, CAPEX) by VALAGRO.
Monsieur Stève BARANTON (Institut de Chimie des Milieux et Matériaux de Poitiers)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
IC2MP - CNRS LPC Institut de Chimie des Milieux et Matériaux de Poitiers
GREMI U-ORLEANS Groupe de Recherches sur l’Energétique des Milieux Ionisés - UMR 7344
VALAGRO VALAGRO CARBONE RENOUVELABLE POITOU-CHARENTES
Help of the ANR 371,900 euros
Beginning and duration of the scientific project: December 2016 - 42 Months