| Abstract |
Open cell cordierite foams were prepared by a direct foaming two-component polyurethane (PUR)/ceramic system. Through optimization of several experimental parameters, such as contents of catalyst, and ceramic cordierite precursor, as well plasticizer presence, foams with porosities 85-95 \% and densities ranging from 130-410 kg/m(3) were obtained. These foams characteristics make them attractive to be used as catalyst supports. The new two-component PUR/ceramic system developed allows the high solid s loading (higher than 40 wt. \%). Finer ceramic particles in this system provide better particles package and cohesion upon sintering, favouring the cordierite foam stability |
