Metallic salt deposition on porous particles by dry impregnation in fluidized bed: Effect of drying conditions on metallic nanoparticles distribution

In the case of slow drying, the impregnation kinetics can be represented by a “shrinking core” model. The critical impregnation rate is controlled by the competition between dissolution and recrystallization at the elementary grain scale. The size of the metal crystallites depends on the pore mean size and size distribution and on the drying rate.