| abstract |
PURPOSE: To efficiently obtain the subject compound useful as a raw material for substrate for high-octane gasolines or pertrochemicals, such as benzene or toluene, in high yield by reacting a polycyclic aromatic-containing hydrocarbon using a specific catalyst. n CONSTITUTION: A polycyclic aromatic-containing hydrocarbon is reacted in the presence or absence of hydrogen gas in the presence of a catalyst containing Ga or Zn and zeolite having 1-12 value of control index [CI=log 10 (residual content of n-hexane)/log 10 (residual content of 3-methylpentane)] or in the coexistence of an inert gas, such as nitrogen gas, at 350-700°C, preferably 450-600°C to afford the objective compound. Especially preferred reaction conditions are a temperature within the range of 450-600°C and the molar ratio of the H fed to the reaction system to the polycyclic aromatic-containing hydrocarbon within the range of ≥0 to ≤1. Furthermore, the aforementioned catalyst is prepared by a method for ion exchange, etc., using a Ca- or Zn-containing compound together with the zeolite. n COPYRIGHT: (C)1991,JPO&Japio |