cps微球固载的双齿席夫碱型氧钒ⅳ配合物的制备及其催化氧化性能分析word格式论文.docxVIP

的氧气、90℃的温度) 可高效地(80%)将苯甲醇转化为单一的产物苯甲醛。溶剂的极性对催化剂的活性有很大的影响，溶剂的极性越弱，催化剂的活性越高， 苯甲 醛的得率越高。催化微球经过多次使用后仍然具有很高的催化活性。将微球 CPS-[VO(SAAM)2]用于乙苯的分子氧催化氧化过程，考察了其催化 活性及主要因素对催化氧化反应的影响。实验结果表明，在催化反应中，在 110℃ 条件下苯乙酮的得率可达 43%，选择性可达 97%。同时催化剂 CPS-[VO(SAAM)2] 具有优良的循环使用性能。关键词：交联聚苯乙烯微球，Schiff 碱，氧钒(Ⅳ)配合物，非均相催化，苯甲醇， 乙苯，分子氧Preparation of Bidentate Schiff Base-Type Oxovanadium(IV) Complex Immobilized on CPS Microspheresand Its Catalytic PropertyAbstractThe oxovanadium(IV) complex exhibite very high catalytic activity for hydrocarbons to the corresponding oxygen compounds,such as alcohols,epoxy compounds and carbonyl compounds.Can also catalyze the oxidation of alcohols and phenols to the corresponding hydroquinones.In this work,Schiff Base-Type Chelating Resin was prepared with chloromethylated polystyrene microspheres (CMCPS) as starting substance and by two polymer reaction steps.Subsequently,the coordination reaction between SAAM-CPS microspheres and vanadyl sulfate was performed,obtaining Schiff base-type oxovanadium(IV) complex was immobilized microspheres ,and they are used in the oxidation reaction of benzyl alcohol and ethylbenzene by molecular oxygen.Examination the catalytic activity and catalytic selectivity.The result of the study will has obvious scientific significance on the greening of catalytic oxidation field.In the presence of catalyst KI,the Delepine reaction between the chloromethyl groups of the swelled CMCPS microspheres and Hexamethylene tetramine (HMTA) was first carried out,and the chloromethyl groups of CMCPS microspheres were transformed into aminomethyl groups,obtaining aminomethyl (AM) group-modified CPS microspheres,AMCPS,and then the Schiff base reaction between AMCPS microspheres and salicylaldehyde (SA) was allowed to be conducted,resulting in Schiff base-type chelating resin.The aminomethyl group-modification reaction of CMCPS was mainly investigated,and the effects of main factors on the Delepine reaction were examined.The experimental results show that KI has