Supported on activated carbon gold colloidal nanoparticles have been prepared in the presence of stabilizing polymer PVA and PVP (polyvinylalcohol, polyvinylpyrrolidone). The effect to Au weight ratio was investigated, for synthesizing with different particle size distribution. By varying polymer/Au wt/wt ratio, mean diameters from 3 8 nm were synthesized. synthesized catalysts studied liquid p...