| 摘要 |
PURPOSE:To produce activated carbon fiber with enhanced adsorption performance in a high yield by impregnating vegetable fiber with a soln. contg. zinc chloride and one or more out of NH4Cl, boric acid and nitric acid followed by carbonization and activation. CONSTITUTION:A soln., e.g. an aq. soln. is prepared contg. about 5-40, esp. about 10-30 wt% of zinc chloride and about 0.5-25, esp. about 2-20 wt% of one or more out of NH4Cl, boric acid and nitric acid. Vegetable fiber is impregnated with the soln., carbonized at about 400-750, esp. about 450-650 deg.C, activated optionally washed, and dried to obtain activated carbon fiber. The vegetable fiber may be kapok or bast fiber, and the fiber is impregnated with about 5-60 wt% of zinc chloride, about 5-25 wt% of NH4Cl, about 0.1-10 wt% of boric acid and about 0.1-10 wt% of nitric acid. |
