Purification Separation Use of additives

CCHEMISTRY METALLURGY C07Organic chemistry C07CACYCLIC OR CARBOCYCLIC COMPOUNDS

C07C7/00Purification Separation Use of additives

C07C7/005Processes comprising at least two steps in series C07C7/04by distillation C07C7/05with the aid of auxiliary compounds C07C7/06by azeotropic distillation C07C7/08by extractive distillation C07C7/09by fractional condensation C07C7/10by extraction C07C7/11by absorption C07C7/12by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids C07C7/13by molecular-sieve technique C07C7/135by gas-chromatography C07C7/14by crystallisation Purification or separation of the crystals C07C7/144using membranes C07C7/148by treatment giving rise to a chemical modification of at least one compound C07C7/14808with non-metals as element C07C7/14816oxygen; ozone C07C7/14825halogens C07C7/14833with metals or their inorganic compounds C07C7/14841metals C07C7/1485oxides; hydroxides; salts C07C7/14858with inorganic compounds not provided for before C07C7/14866water C07C7/14875with organic compounds C07C7/14883hydrocarbons C07C7/14891alcohols C07C7/152by forming adducts or complexes C07C7/156with solutions of copper salts C07C7/163by hydrogenation C07C7/167for removal of compounds containing a triple carbon-to-carbon bond C07C7/17with acids or sulfur oxides C07C7/171Sulfuric acid or oleum C07C7/173with the aid of organo-metallic compounds C07C7/177by selective oligomerisation or polymerisation of at least one compound of the mixture C07C7/20use of additives