| 摘要 |
PURPOSE: A process of preparing a composite absorbent by dispersing fine active alumina uniformly, spinning the thus produced pitch and then stabilizing is provided. Whereby, the product has a crystal structure of active alumina and its porous structure is not damaged to be used as an absorbent. CONSTITUTION: About 0.01 to 50 parts by weight of active alumina is dispersed uniformly in 100 parts by weight of pitch at a temperature of 20 to 80deg.C higher than the pitch softening point, spun at a temperature of 5 to 80deg.C higher than the pitch softening point, and heat-stabilized at 200 to 350deg.C in an air atmosphere, and the stabilized pitch fiber is activated at 700 to 850deg.C for 10min to 10hr.
|
