PROCESS FOR THE PRODUCTION OF CYCLIC HYDROCARBONS

摘要

1,222,791. Hydrogenating hydrocarbon oils. KUREHA KAGAKU KOGYO K.K. 19 Feb., 1969 [19 Feb., 1968], No. 9071/69. Heading C5E. A process for producing hydrocarbons free from all non-cyclic compounds and containing aromatic rings and naphthenic rings in a ratio which can be controlled by varying the reaction conditions, each of said rings having very little side chain content, comprises subjecting a tarry material obtained by cracking petroleum hydrocarbons at a temperature higher than 900‹ C. to hydrogenation in the presence of a catalyst. The catalyst may be Ni, Co, Mo, Cu, Pt or Pd as metal, oxide or sulphide on silica, alumina or diatomaceous earth.