Preparation of Activated Carbons from Cocoon

Abstract

In order to develop new usage of cocoon, production of activated carbon from cocoon was examined. Cocoon plate was prepared by hot-press method for several sheets of flat sheet cocoon. Cocoon plate carbon was carbonized from cocoon plate under the condition of heating at N₂ atmosphere. In the purpose of improvement of deodorization for cocoon plate carbon, activation of cocoon plate carbon was performed by using water, CO₂-gas or chemicals (ZnCl₂, NaOH, K₂CO₃). Surface area of cocoon plate carbon was increased with using activation agents at 800°C. The largest value of surface area (2186 m²/g) was obtained in the case of K₂CO₃.