| 摘要 |
PURPOSE:To obtain the objective substance in high yield and selectivity by using a catalyst composed of vanadium supported on alumina particles and contacting the catalyst with an alkylaromatic compound or a stock oil containing the compound in the presence of hydrogen. CONSTITUTION:An aromatic compound having high utility value can be produced by contacting (A) an alkylaromatic compound or a stock oil containing the compound with (B) a catalyst composed of alumina carrier and 0.1 to 30wt.% of vanadium in the presence of hydrogen at 450 to 680 deg.C (preferably 500 to 650 deg.C) under a hydrogen partial pressure of 2 to 30kg/cm<2>, thereby effecting hydrogenation dealkylation reaction of the starting compound. Vanadium is present in the catalyst in the form of an oxide such as V2O3 or V2O4 and forms a catalyst particle having a weight-average particle diameter of 25 to 250mum, a bulk density of 0.3 to 1.5g/cm<3> and a pore volume of 0.1 to 1.5m<3>/g by using gamma-alumina, etc., as a carrier. Preferably, the hydrogenation dealkylation process and the regeneration of the catalyst are alternately performed by using a pair of fluidized bed columns. |
