Development of polyurethane cellular foams for the intensification of processes.

Etudiant :Louis Lefebvre

Ecole doctorale :Array

Directeur ou Directrice :David Edouard

Début :01/10/2014

Financement :Bourse Ministère (MENRT)

Date de la soutenance :20/03/2019

Solid foams, made with polyurethane, are well known for their interesting transport properties such as low pressure drop or high specific surface area. However, there are not used as catalytic support due to actual deposition method which causes an alteration of their mechanical properties. First, we used a new deposition method using polydopamine (PDA), a polymer with interesting adhesive and reducing properties. The PDA layer will cover homogenously our support then will act as intermediary for active phase deposition, whether they are commercially available or synthetized in-situ. Afterward, our supports were tested for several catalytic reactions, whether monophasic (liquid phase) or biphasic (gas/liquid) to show the active phase efficiency and stability. Furthermore, we successfully deposited a good active phase (cobalt) for hydrogen production. Kinetic study at low temperature were done and shown promising results for sustainable energy production. Finally, the last part was devoted to the use of our soft structured catalytic support within a new reactor, allowing to use its mechanical properties to improve mass transfer.

Keywords: Polyurethane foam, Polydopamine, Functionalization, Soft Structured Catalytic Support (S2CS)