Process for producing 2-methylnaphthalene and method of restoring the activity of solid acid catalyst used in that process.

摘要

A process for producing 2-methylnaphthalene which comprises performing an isomerization reaction on a 1-methylnaphthalene containing feed oil by contacting said feed oil with a solid acid catalyst in the presence of at least one compound selected from the group consisting of tetralin and alkyltetralins, and recovering 2-methylnaphthalene from the resulting reaction product. Also disclosed is a method of restoring the activity of a solid acid catalyst for isomerization of methylnaphthalene, in which a solid acid catalyst whose activity has deteriorated as a result of its use in the reaction of isomerization of a 1-methylnaphthalene containing feed oil is brought into contact with at least one compound selected from the group consisting of tetralin and alkyltetralins.