| abstract |
1,193,300. Purification of phenol. HALCON INTERNATIONAL Inc. 16 June, 1967 [23 June, 1966], No. 27925/67. Heading C2C. Pure phenol is prepared by treating crude phenol, obtained by the dehydrogenation of a cyclohexanol or cyclohexanone product of a cyclohexane oxidation process with a silicaalumina containing material and fractionating the treated phenol. Preferably the crude phenol is passed through a column containing the silica-alumina, preferably 50-95% SiO 2 and 5-30% Al 2 O 3 , in the form of beads or pellets, at 60-200 C. |