Dissertation > Excellent graduate degree dissertation topics show

Catalytic Synthesis of Tri-n-butyl Citrate and Acetyl Tri-n-butyl Citrate

Author: XieChunHe
Tutor: HeChaoHong
School: Zhejiang University
Course: Applied Chemistry
Keywords: Plasticizer Tributyl citrate Acetyl tributyl citrate Macroporous strong acid cation exchange resin Catalytic Tubular fixed bed reactor
CLC: TQ414
Type: Master's thesis
Year: 2006
Downloads: 565
Quote: 3
Read: Download Dissertation


This paper reports the citric acid, n-butanol as raw materials in the presence of a catalyst synthesis of tributyl citrate (TBC), and to synthesize the TBC, acetic anhydride, in the presence of a catalyst synthesis of acetyl tributyl citrate (ATBC) study results. Catalytic Synthesis on ATBC tried tube fixed bed reactor for synthesis operation, and achieved satisfactory results. In the literature, based on the first use of sodium hydrogen sulfate as catalyst TBC, the reaction material ratio, reaction time and the amount of catalyst and other process conditions were investigated to optimize the process conditions, TBC yield reached 97.6 %, higher than the literature value of 95.0%; while also using macroporous strong acid cation exchange resin, 4A zeolite as a catalyst to the reaction system was studied, and achieved good experimental results, the two catalysts in the optimization process conditions TBC, yields were 83.0% and 76.5%. Using the above synthesized TBC, the catalyst sodium bisulfate, macroporous strong acid cation exchange resin, under the effect of using acetic anhydride as acetylating agent for the synthesis of ATBC study material and the reaction ratio, reaction temperature, time and the amount of catalyst used and other process conditions were optimized, the optimal process conditions, the two catalyst ATBC 99.5% yield and 99.8%, higher than the literature values. And raw materials citrate close to 100% conversion rate, to avoid separation of the TBC and ATBC difficult issues, post-treatment process is simple. 4A also tried two kinds of HZSM-5 zeolite and the reaction system was studied, the results show that they are not suitable for this system. Tubular fixed bed reactor using synthetic ATBC, the macroporous strong acid cation exchange resin as a catalyst and a fixed bed of filler material, was found after wetting the catalyst, the catalytic activity was improved in the low temperature can be to achieve a higher yield. Preliminary investigation of the molar ratio of the reactants, the temperature of the water heating cycle, feed rate, catalyst loading height on yield of ATBC. In the right conditions, TBC conversion rate close to 100%, and almost no other byproducts. In this purification process proposed TBC and the product obtained by the gas chromatography analysis of the ATBC content of more than 99%, in line Morflex Co. Standards.

Related Dissertations

  1. Experimental Research on Influence of Coal Reburning Reaction Conditions on NO_x Reduction by Non-Catalytic Reduction of Ammonia,X701
  2. Synthesis and Application of the chloro- methoxy fatty acid methyl esters,TQ414.8
  3. Study on Activated Carbon Supported Cerium Catalytic Ozone Oxidation of Chloramphenicol,X703
  4. Process and Mechanism of Eucalyptus Pulp Bleaching Catalysed by Cu2+/Co2+,TS745
  5. The Study of NO Low-temperature Catalytic Oxidation Over MnFeO_x Catalyst,X701
  6. Study on Using Sepiolite As Supported Catalysts in Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol,O643.32
  7. Physical Fields’ Characteristic Study & Structural Optimization of a SCR Denitrification Reactor,X773
  8. Gold-catalyzed Addition Reaction of Sulfonates and Alkynes and Study of Synthesis and Bioactivity of (E)-3-phenyl-substituted Acrylic Acids,R914
  9. Study on Properties of Ce、Co、Ni/V-W/TiO2 Modified by Composite Sol for Selective Catalytic Reduction,X701
  10. Study on Electrochemistry and Raman Spectrum of Picoline Electro-Oxidation Beavior in Non-aqueous System,O626.321
  11. Research on the Plasticizers of Starch Sizing Agents,TS103.846.1
  12. Research on Fuel Gas Production from Catalytic Gasification of Municipal Solid Wastes,X799.3
  13. Amine metal compound synthesis, structure and reactivity,O627
  14. Activation and Transformation of Carbodiimide by Lanthanide Tris(phenoxide)s,O627.3
  15. Research on Iron/Copper-cocatalyzed C-o, C-N Coupling Reaction and Copper-catalyzed Coupling Reaction of Terminal Alkyne,O643.32
  16. (Class ) perovskite -type oxides catalytic elimination of N 2 O,X701
  17. Study on Synthesis of Dimethyl Carbonate in Supercritical Carbon Dioxide,O623.662
  18. Synthesis, Characterizations and Catalysis of Mesoporous Carbon Material Supported Metal Catalysts,O643.36
  19. Heterogeneous Catalytic Ozone Oxidation for Pharmaceutical Wastewater Treatment,X787
  20. Influence of Composite Molecular Sieve Catalysts on Pyrolysis of Biomass for Bio-Oil Production,TE667
  21. Electrocatalytic Oxidation of Dyes Using Cobalt Phthalocyanine Modified Activated Carbon Fiber Electrode,X791

CLC: > Industrial Technology > Chemical Industry > Production of solvents and plasticizers > Plasticizer
© 2012 www.DissertationTopic.Net  Mobile