Preferential adsorption of normal paraffins on molybdenum disulphide, tungsten disulphide and boron nitride

摘要

1,126,482. Refining oils. BRITISH PETROLEUM CO. Ltd. 24 Sept., 1965 [25 Sept., 1964], No. 39140/64. Heading C5E. A method of separating long-chain normal hydrocarbons having at least 10 carbon atoms per molecule from their mixtures with other hydrocarbons comprises contacting the mixture with graphite having a surface area of at least 50 mSP2/SP/g.:selectively to adsorb the normal'hydrocarbons. The process is applicable to dewaxing and reducing -the cloud and pour points of petroleum fractions, and results in increase of viscosity =index and reduction of sulphur content. The oil to be treated may be dissolved in a lower-boiling solvent, e.g. an alcohol or a hydrocarbon.