METHOD OF MAKING 2,6-DIMETHYLNAPHTHALENE FROM OTHER DIMETHYLNAPHTHALENE ISOMERS AND FROM DIMETHYLTETRALINS/DIMETHYLDECALINS WITH A METHYL GROUP ON EACH RING

摘要

The invention discloses a method of making 2,6-dimethylnaphthalene from any DMN with one methyl on each ring in a two-stephydroisomerization/dehydrogenation process. The catalyst used in the hydroisomerization step is an acidic catalyst such as a silica aluminumcatalyst with a hydrogenation/dehydrogenation metal. The catalyst used in the dehydrogenation step is a reforming type catalyst.