| 摘要 |
An adsorptive separation process for separating sterols from a tall oil feed mixture, which process comprises contacting the feed mixture with an adsorbent comprising a carbon sieve having average pore diameters greater than about 20 ANGSTROM , especially 30-90 ANGSTROM , and a surface area greater than about 300 m2/g, especially 700-1100 m2/g, and, preferably, a carbonaceous pyropolymer or carbonized resin, selectively adsorbing substantially all of the sterols to be separated to the substantial exclusion of the other components and thereafter recovering high purity sterols. A desorption step is used to desorb the adsorbed sterols with an aromatic liquid hydrocarbons, e.g., toluene or chlorobenzene.
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