P 20/01

Project Abarca

Development of porous hybrid materials based on silazane and organic monomers for CO2 adsorption/separation.

Organic-inorganic hybrid ceramics with controlled porosity and large surface area present a great interest due to low cost synthesis and versatile shaping possibilities. It have been applied in different fields as catalysis, adsorption, gas storage. Hybrid ceramics can be obtained by pyrolysis of organic-inorganic polisiloxane based compounds under nitrogen atmosphere. Nevertheless an alternative synthesis can be developed using organic monomers and silazane based compounds to obtain porous hybrid materials by hydrosilylation mechanism reaction assisted by platinum catalyst. This alternative method avoids the normal sol-gel reaction route, reducing some synthesis steps and leading to hybrid porous ceramics with high thermal resistance. Besides the high content of nitrogen atoms in silazane precursors is very useful for CO2 gas separation since they can induce facilitated transport through the material by reversible formation of carbamates mechanism.

Contact : Wilhelm, Collins Abarca