EFFECTS OF H2O2 TREATMENT ON SURFACE PROPERTIES AND CYANOGENS CHLORIDE DEGRADATION OF ACTIVATED CARBON

摘要

Activated carbon is widely applied in catalysis, either as supports, or as catalysts [1]. Their performance depends on both by their texture and surface chemistry. The nature and concentration of surface functional groups may be modified by chemical and/or physical treatments. Oxidation treatment in liquid phase is one efficient way to increase the concentration of surface oxygen groups. Compared with the other inorganic oxidants, such as nitric acid [2], hypochlorite [3], hydrogen peroxide (H2O2) [4] is more simple and unpolluted to modify activated carbon. So far, there are few systemic studies on the effect of H2O2 treatment on the texture and surface chemistry of the activated carbon. The present work aims at understanding the effect of H2O2 oxidation treatment on the surface properties and cyanogen chloride degradation of the activated carbon.