Solid catalytic compositions based on mesoporous organic materials

A method for preparing a solid catalytic composition based on a mesoporous polymer material, for which the walls of the mesopores bear reactive functions R able to catalyze a chemical reaction, which comprises the following successive steps:

• (A) within a medium comprising organic monomers, self-assembling of organogelator compounds in the form of fibrillar structures having a diameter from 10 nm to 100 nm is achieved, whereby a gel is formed comprising said fibrillar structures in a dispersive medium comprising the monomers;
• and then
• (B) polymerization of the monomers present in the dispersive medium of the thereby prepared gel is carried out, whereby a polymer is formed around said fibrillar structures;
• and then
• (C) the organogelator compounds are extracted out of the thereby prepared polymer material, whereby a porous polymer material (M0) is obtained,
• wherein the organic monomers used bear R′ functions, not engaged into the polymerization reaction of step (B), whereby the polymer material (M0) obtained at the end of step (C) comprises these R′ functions at least at the walls of its mesopores, these R′ functions being:
• reactive R functions able to catalyze a chemical reaction, the presence of which is sought on the material;
• or
• said reactive R functions in protected form;
• or
• R″ functions, able to allow grafting of said reactive R functions on the polymer material obtained at the end of step (C) or else such functions in a protected form,
• and then
• (D) if necessary, all or part of the R′ functions present at the walls of the mesopores of the polymer material (M0) stemming from step (C) are converted into reactive R functions, and a composition is recovered comprising a porous polymer material (M) bearing reactive R functions within its mesopores, as a catalytic composition.