The Study Of Purification Of Phenanthrene And Oxidation Of Phenanthrene To Prepare Phenanthrenequinone

In the first part of the paper , purification of crude phenanthrene by using potassium hydroxide precipitated and recrystallization was studied , and two methods of qualitative and quantitative analysis , GC-MS apparatus and iodine-analysis , were builded and applied to the mesuration to the purity of phenanthrene . The results indicate that the recrystallization has a good effect , the purity increase from 60.34% to 84.21% , and it can provides the raw materials for the synthesis of phenanthrenequinone . But for the potassium hydroxide precipitated , the purity decrease because of charcoal of crue phenanthrene .In the second part of the paper , oxidation of phenanthrene for the preparation of phenanthrenequinone by using halogen compound was studied . The chief factors of this method was discussed , and the optimum processing condition was obtained . The mechanism of the reaction by potassium hydroxide-precipitated was discussed , and the reaction kinetic parameters was measured . The results indicate that for using halogen compound to oxidize phenanthrene (84.21%) , the yield of phenanthrenequinone can reach 63.23% , and that the reaction condition is moderate , the technological process is comparatively simple , and it can not cause environment pollution , the solvent can be recycled . The kinetic studies show that the oxidation of phenanthrene is a first-order reaction , and the reactionrate equation at 112℃ can be expressed as :...