During the chemical activation process 50 g of the dry CER samples were placed in a beaker and impregnated by adding adequate volumes of H3PO4 at different concentrations: 30, 40 and 50% so that the samples are entirely soaked.
During the chemical activation process 50 gof the dry CER samples were placed in a beaker and impregnated byadding adequate volumes of H3PO4 at different concentrations: 30,40 and 50% so that the samples are entirely soaked.