Dissertation > Excellent graduate degree dissertation topics show

Micellization and Application of Super-Concentrated Hydrochloric Acid

Author: ZhouHui
Tutor: CaiYuanLi;XuZuoZhuang
School: Xiangtan University
Course: Polymer Chemistry and Physics
Keywords: Nano-scale localization Hydrochloric acid dynamic macromolecule Super-concentrated hydrochloric acid High reactivity
CLC: O643.32
Type: Master's thesis
Year: 2011
Downloads: 31
Quote: 0
Read: Download Dissertation


Acid catalysis plays an important role in industrial synthesis. Because of the traditional liquid acid have a series of problems, solid acids and super-acids have been extensively used since the acidity of them is much stronger than that of conventional mineral acids. However, they lose the catalytic activities easily when water is involved. Therefore, many acid-catalyzed reactions are still carried out by using conventional acids, e.g., HC1 and H2SO4. In order to resolve the problem of solubility of volatile acids are limited, this thesis utilized amphiphilic-based reversed micelle system to improve the solubility of HC1 in water and prepared super-concentrated hydrochloric acid (SC-HC1):Aliquat 336/benzene/water/HCl. In this system the concentration of hydrochloric acid is much higher than 37 wt%. They connected with eath other through hydrogen bonding, and formed hydrochloric acid dynamic macromolecules. Small angle X-ray scattering (SAXS) indicated the formation of super-concentrated hydrochloric acid that was localized in monodispersed reversed micelles with radius of ca.9 nm or 7nm .1H NMR and FT-IR studies evidenced the saturated hydrogen bonding of such super-concentrated hydrochloric acid molecules. We also studied the optimized conditions for the preparation of SC-HC1. The results demonstrated that the best condition were as follows, ambient temperature, mAliquat 336: mbenzene=7:3, water content about 1~2%, gaseous HC1 bubbled for 2.5 h. Such a nano-sized confined micellar medium often exhibits fascinating physico-chemical properties. The hydrochloric acid dynamic macromolecules exhibited high reactivity in addition reaction. For example, addition reaction between C=C of cyclohexene and SC-HC1 can carry out under atmospheric pressure and ambient temperature. SC-HC1 can also react with benzonitrile and methanol to form benzinidic acid methyl ester hydrochloride salt, as small amount of water is added. SC-HC1 may provide other potential applications in organic synthsis and other chemical industry.

Related Dissertations

  1. Catalytic Performance of HZSM-5 Modified by Mn/Fe-Mn for the NH3-SCR,O643.32
  2. Study on the Enantioselective Henry Reaction of α-Ketoesters Catalyzed by Chiral Copper( Ⅱ )-Diamine Complex,O643.32
  3. Study on the Application of TiO2 in Photocatalytic Degradation of Methyl Orange and Photoelectrode of Dye Sensitized Solar Cell,O643.32
  4. The Modifications of Mo/HZSM-5 Catalysts and Methane Dehydro-Aromatization in the Absence of Oxygen,O643.32
  5. The Research on Palladium-Catalyzed Difunctionalization Reactions of Alkenes and Trifluoromethylation of Indoles Reactions,O643.32
  6. The Synthesis of Palladium Complexes of Benzannulated N-heterocyclic Carbenes and Their Applications to N-arylation Reaction,O643.32
  7. Modify TS-1 by the Secondary-crystallization Method and Study on Its Catalytic Performance for Epoxidation of Allyl Chloride,O643.32
  8. Study on Aerobic Oxidation of Alcohols Using Organic Catalytic System,O643.32
  9. Synthesis and Catalytic Oxidation of Alcohols Performance of Dawson Type Multi-Component Heteropoly Compounds,O643.32
  10. The Influence of Solvent and Water Activity on Lipases’ 1,3-positional Selectivity and Acyl-migration,O643.32
  11. Research on Photocatalytic Degradation of Chlorobenzene and Toluene by Visible Light,O643.32
  12. Cinchona Alkaloid Catalyzed Asymmetric Tandem Michael-Aza-Aldol Reaction of Cyano-acetophenone to α,β-Unsaturated Trifluoromethyl Ketone,O643.32
  13. Catalytic Behaviors for Isobutene Selective Oxidation of MoVBi-AlPO4 Catalysts,O643.32
  14. Supercritical Catalytic Cracking of N-Dodecane on HZSM-5 and Y Zeolites,O643.32
  15. Asymmetric Norrish/Yang Photo Reaction of 6-Carbonyl Substituted Bicyclo [3.1.0] Hexane,O643.32
  16. Preparation, Characterization and Application of Electrocatalytic Materials,O643.32
  17. Synthesis and Application of Visible Light Photocatalytic Materials of Bi Family,O643.32
  18. Supported nano - gold catalyst in the liquid phase α, β- not unsaturated aldehydes for selective hydrogenation of α, β- unsaturated alcohol reaction in the research,O643.32
  19. Sonogashira Reaction Catalyzed by Ionic Liquids,O643.32
  20. Ketone hydrosilylation,O643.32
  21. Synthesis and Characterization of Complexes with Bis (Imino) of-benzene Ligands and Studies on Their Catalysis for Olefin Polymerization,O643.32
  22. Studies on SiO2-deposited HZSM-5 Catalysts for Catalytic Cracking of C4 Olefins,O643.32

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