| 摘要 |
PURPOSE:To obtain a formed product of active carbon, excellent in active carbon function with a high strength and good in handleability by carrying out baking treatment of an organic binder at least carbonizable by baking and active carbon having fine powder of silicic acid anhydride applied to the surface thereof as a principal material. CONSTITUTION:An organic binder (e.g. an acrylic resin, melamine resin or PVC) at least carbonizable by baking and active carbon are used as a principal material and subjected to baking treatment to produce a formed product of the active carbon. In the process, active carbon prepared by preapplying fine powder of silicic acid anhydride to the surface thereof is used as the aforementioned active carbon. The fine powder of the silicic acid anhydride applied to the surface of the active carbon is mutually fused on the surface of the active carbon by treatment at a high temperature and a cellular structure is simultaneously provided. Thereby, strength as the formed product of the active carbon is increased and gas permeability required for the active carbon function is also simultaneously ensured. The formed product can be suitably used as, e.g. filters and catalyst carriers. |
