| 简介 |
FIELD : chemistry.SUBSTANCE : sorbent of the hydrocarbon and lipids contains fine water absorbing material with siloxane fragments fixed on its surface and having the general formula whereat R : O; Ra : CH3, O-, ; Rb : CH3, H; Rc : CH3, O-; n ≤ 50. The method of its preparation lies in modification of fine material particles with organosilicone liquid selected from the group : solutions of hydride siloxane liquids in non-polar solvents, water emulsions of hydride siloxane liquids, water solutions of alkali metals siliconates. The said modification is carried out by stepwise sorbent loading and mixing in the reactor at temperature 20-500oC during 15-60 min with rate of stirrer rotation providing the turbulence mode with following drying during 3-4 hrs. at temperature 150±25°C with rotation rate selected according to condition : Re=2000÷12000 whereat Re is Reynolds number.EFFECT : reducing of sorbent cost and water absorption, decrease of the time of sorbent binding with extracted substances, providing of the one-stage method implementation.9 cl, 26 ex |
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