| 摘要 |
PURPOSE: A hydrogenization catalyst for nitroaromatic compounds, a producing method thereof, and a producing method of an aminoaromatic compound using thereof are provided to improve the reactivity of the nitroaromatic compounds while maintaining the concentration of non-reactive nitrobenzene. CONSTITUTION: A hydrogenization catalyst for nitroaromatic compounds contains palladium and zinc on a carrier. A producing method of the hydrogenization catalyst for the nitroaromatic compounds comprises the following steps: fixing zinc components on the carrier by absorbing zinc precursor on the carrier, precipitating the zinc components using sodium carbonate as a precipitating agent, and applying heat; washing the precipitating agent; and fixing palladium components on the carrier with the zinc components. [Reference numerals] (AA) Introducing carbon black; (BB,HH) Stirring for 10 minutes; (CC) Introducing a ZnCl_2 solution; (DD,JJ) Stirring for 30 minutes; (EE,KK) Precipitation(NaHCO_3 5% solution) pH=7.0-7.5; (FF,LL) Raising to 70 (for 30 minutes); (GG,MM) Stirring for 30 minutes at 70; (II) Introducing Na_2PdCl_4 solution; (NN) Adding DI water such that Solid% becomes 4.3%; (OO) Particle adjustment/pH adjustment; (PP) Particle size(90%): 4-8um |
