| 摘要 |
PCT No. PCT/JP81/00379 Sec. 371 Date May 17, 1982 Sec. 102(e) Date May 17, 1982 PCT Filed Dec. 15, 1981 PCT Pub. No. WO82/02006 PCT Pub. Date Jun. 24, 1982.A shaped composite adsorbent made of a shaped porous material of a skin-core structure comprising a powdery ion-exchange type adsorbent and an ionic group-containing acrylonitrile polymer and wherein said shaped porous material has a semi-permeable skin layer of 0.01 to 1 mu in thickness and a void volume rate of 50 to 90%, which is capable of adsorbing solutes present at low concentration with high selectivity and high yield. The shaped composite adsorbent of the present invention can be obtained by a process comprising dissolving an ionic group-containing acrylonitrile polymer in and dispersing a powdery ion exchange type adsorbent in an inorganic solvent for said acrylonitrile polymer, extruding the resultant into a coagulating liquid bath to effect coagulation-shaping thereof. The adsorption capacity and mechanical strength of the shaped composite adsorbent of the present invention can be further improved by subjecting the above-obtained coagulation-shaped material to heat treatment in a wet state, without drying. |
