| 摘要 |
1,148,907. Purification of phenol. IMPERIAL CHEMICAL INDUSTRIES Ltd. 14 Nov., 1966 [26 Nov., 1965], No. 50342/65. Heading C2C. Phenol, derived from cumene via the hydroperoxide, is purified by bringing it into contact at elevated temperatures with a synthetic silicaalumina hydrocarbon cracking catalyst under substantially anhydrous conditions (i.e. not more than 1% by volume of H 2 O is present in the phenol) and recovering the purified phenol. The catalyst is suitably of synthetic silicaalumina catalyst which is highly active as a hydrocarbon cracking catalyst and which contains 5 to 30% by weight alumina and 95 to 70% by weight silica and which may also contain from 0À01 to 5% of chromium, molybdenum or tungsten as such or in the form of a compound such as chromium sesquioxide. The phenol starting material is that obtained from cumene which may have been partially refined by removal of hydrocarbons and high boiling materials by distillation. Examples are furnished. |
