Mechanism for the preparation of carbon spheres from potato starch treated by…

Abstract. Carbon spheres (CSs) retaining the morphology of potato starch were prepared by a twostep process: impregnation followed by carbonization. In this process, potato starch was impregnated in NH4Cl solution for 1 h. The mechanism of preparation was proposed. The presence of HCl catalyzes the dehydration of impregnated starch at lower temperature than its melting point, which destroy…