Process for preparing catalyst loaded polyphenylene particles, the obtained polyphenylene particles and their use as catalysts

Catalyst-loaded polyphenylene polymer particles having nanoparticles of catalytically active material dispersed in a polymer network, said nanoparticles having a particle size from 0.25 to 10 nm and the catalytically active material being selected from the group consisting of metals selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Mo, Se, Sn, Pt, Ru, Pd, W, Ir, Os, Rh, Nb, Ta, Pb, Bi, Au, Ag, Sc, Y and alloys thereof, and compounds thereof wherein said compounds are selected from oxides, phosphides, nitrides and sulfides, wherein said polyphenylene polymer particles are obtainable by a Suzuki coupling reaction of di-, tri or tetrahalo-aryl compounds or mixtures thereof with di-, tri- or tetraboronic acid aryl-compounds or mixtures thereof, wherein said nanoparticles are present from 0.25 to 15%-by weight based on the total weight of the polymer.