Dissertation > Excellent graduate degree dissertation topics show

Study on the Synthesis and Catalytic Oxidation Performance of Series of Molybdovanadophosphoric Heteropoly Compounds

Author: LiJiaQi
Tutor: YinZuoLin
School: Hunan Normal University
Course: Applied Chemistry
Keywords: Ammonium of Molybdovanadophosphoric acid heteropoly compounds synthesis catalytic oxidation H2O2
CLC: O643.32
Type: Master's thesis
Year: 2005
Downloads: 169
Quote: 1
Read: Download Dissertation

Abstract


Molybdovanadophosphoric heteropoly compounds are sorts of replaced heteropoly compounds. A series of （NH4）n+3PMo12-nVnO40 were synthesized and characterized, the catalytic behavior of the heteropoly compounds was studied. The results show that （NH4）n+3PMo12-nVnO40 have better catalytic oxidation property: faster reaction rate, lower reaction temperature, higher selectivity of products and easy regeneration in the reaction.1 Synthesis and characterization of （NH4）n+3PMo12-nVnO40A series of （NH4）n+3PMo12-nVnO40 were synthesized using （NH4）2HPO4, （NH4）6Mo7O24 and NH4VO3 as material by a optimum method. TG-DSC, IR, UV, CV and XRD confirmed the synthesized products. The results show that the series of heteropoly compounds have Keggin structure.2 Catalytic oxidation of ethylbenzene by （NH4）n+3PMo12-nVnO40Oxidation of ethylbenzene was catalyzed by （NH4）n+3PMo12-nVnO40 using H2O2 as oxidant in acetic acid solvent. The conversion of ethylbenzene was 82. 0% and the selectivity of acetophenone was 100% at optimum condition of 343K, reacting for 4h.3 Catalytic oxidation of cyclohexene by (（NH4）n+3PMo12-nVnO40Oxidation of cyclohexene was catalyzed by （NH4）n+3PMo12-nVnO40 using H2O2 as oxidant in acetone solvent. The conversion of cyclohexene was 80.8% and the selectivity of cyclohexene-2-one was 59.7% at the optimum condition of 333K, reacting for 6h. The conversion of material increased when reaction time was prolonged.

Related Dissertations

  1. Studies on the Synthesis and Technology of Dipentaerythritol and Its Derivative,TQ223.164
  2. Synthesis and Characterization on Semi-Aromatic Polyamides Containing Benzoxazole Units,O633.5
  3. Video Coding Research Based on Texture Characteristics,TP391.41
  4. Atovaquone analogues Design, Synthesis and antitumor activity of,R914
  5. The Study of NO Low-temperature Catalytic Oxidation Over MnFeO_x Catalyst,X701
  6. Expression of β-Catenin in Pig’s Ovary and the Effect of β-Catenin on Porcine Granulosa Cells Apotosis and Steroidogenesis Related Enzyme,S828
  7. The Research on Texture Synthesis Technology from Cloud Theory & Been Evolution Genetic Algorithm,TP391.41
  8. Synthesis and Properties of Novel Low Viscosity Difluorooxymethylene-Bridged Liquid Crystals Compounds,O753.2
  9. Study on Electrochemistry and Raman Spectrum of Picoline Electro-Oxidation Beavior in Non-aqueous System,O626.321
  10. Study on Synthesis of Xyloses Esters and Their Application in Cigarette,TQ655
  11. 1, Bcl-2 small molecule inhibitors of protein synthesis and antitumor activity of two hydroxytyrosol new methods of synthesis,R96
  12. Green and Efficient Synthesis of Tetronic Acid,TQ251.1
  13. Heterogeneous Catalytic Ozone Oxidation for Pharmaceutical Wastewater Treatment,X787
  14. Electrocatalytic Oxidation of Dyes Using Cobalt Phthalocyanine Modified Activated Carbon Fiber Electrode,X791
  15. Study on the Bromolactonization of Alkenoic Acids with Hypervalent Iodion Reagent,O621.25
  16. The Synthesis and Performanc Research of Three Rosin Cationic Emulsifiers,TQ423.92
  17. Cooperative Hunting of Multiple Mobile Robots under Unknown Dynamic Environment,TP242
  18. Application of Military Speech Name Database by VTFR Synthetic Method,TN912.3
  19. The DAST crystal material synthesis and crystal growth,O782.1
  20. 1. Synthesis and Structure Modification of Vorinostat 2. Synthesis and Structure Modification of Bendamustine Hydrochloride,R914
  21. Hydrothermal Synthesis of Oxide Hollow Spheres,TB383.4

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Chemical kinetics,catalysis > Catalytic > Catalytic reaction
© 2012 www.DissertationTopic.Net  Mobile