| 摘要 |
PCT No. PCT/GB89/01135 Sec. 371 Date Jul. 19, 1990 Sec. 102(e) Date Jul. 19, 1990 PCT Filed Sep. 26, 1989 PCT Pub. No. WO90/03458 PCT Pub. Date Apr. 5, 1990.A process is provided for preparing fibrous or film type activated carbon including the steps of carbonizing a cellulosic material and activating the resulting carbon, each stop occurring at a temperature between 200 DEG C. and 1100 DEG C. in an oxidation-suppressing atmosphere, in which, prior to activation, the cellulosic material or carbon is impregnated with at least one boron-containing compound and at least one phosphorus-containing compound. This impregnation treatment greatly increases the activation rate, so reducing the activation time and therefore energy costs. Higher levels of production of fibrous activated carbons can thus be achieved. |
