Dissertation > Excellent graduate degree dissertation topics show

Study on Dehydration of tert-Butyl Alcohol Catalyzed by Functionalized Ionic Liquid

Author: GuoTianTian
Tutor: WangZhiLiang
School: Shandong University of Science and Technology
Course: Chemical processes
Keywords: Functionalized ionic liquids ethylene Tert-butyl alcohol Dehydration
CLC: O643.32
Type: Master's thesis
Year: 2011
Downloads: 18
Quote: 0
Read: Download Dissertation

Abstract


Acidic ionic liquids are composed of organic cations and inorganic or organic anions. They are all liquid at or nearly room temperature and are salts which can give protons(or contain lively acidic protons). As a kind of new catalytic materials, acidic ionic liquids had win more and more people’s good graces.According to the reaction mechanism of the dehydration of tert-butyl alcohol, the kinetics and thermodynamics factors which affect the reaction were analyzed. The influence of the process conditions including temperature, pressure and the concentration of TBA on the reaction chemical equilibrium of the dehydration of tert-butyl alcohol was investigated by using software Aspen plus.Four kinds of acidic ionic liquid catalysts were prepared, which contain group of SO3H, according to two-steps synthesis methods. The structures of the target compounds were confirmed by 1H-NMR,13C-NMR and IR spectrometry. The decomposition temperature of the compounds prepared were tested by TGA. And by applying the Hammett index method and the PH meter, the change of the ionic liquids acidity were observed.In this paper, the high pressure reactor vessel was built. Based on the dehydration of tert-butyl alcohol, the reaction activity of the acidic ionic liquids prepared in the paper was evaluated.By applying ionic liquid [Mim(CH2)3SO3H]+[CF3SO3]- as the catalyst, the effects of the process conditions, which include reaction temperature, reaction time, catalyst dosage and the concentration of TBA, on the dehydration of tert-butyl alcohol were systematically studied. With using the producing rate of isobutylene as the technical index, the process parameters were optimized according to the orthogonal experimental methods.It is found that the acidic ionic liquids prepared have high catalytic activity and trong acidity, and that they have good thermol stable performance and can be used repeatedly. The results indicate that the optimum process conditions are as follows:temperature-120℃, catalyst-8%, time-50min.

Related Dissertations

  1. Hot air drying characteristics of lettuce osmotic dehydration mass transfer kinetics and permeability,TS255.52
  2. Research on Toxicity Identification and Reduction Technology for Petrochemical Industrial Drainage,X742
  3. Cross-Talk between Ethylene and Heme-Heme Oxygenase Signal System in Primary Root Growth Inhibition of Etiolated Tomato Seedlings,S641.2
  4. Research on Novel and Highly Efficient Modified Hybrid CrOx-B/SiO2 Catalyst for Ethylene Polymerization,TQ325.12
  5. Experimental Study on the Ethylene/air Diffusion Flame Based on Near-infrared Emission Spectrometry Measurement,TK16
  6. Preliminary Study of Nanotoxicity about Amphiphilic Graft Polyphosphazenes,R943
  7. Inverse emulsion prepared by the star P (AM-DMDAAC) flocculant and its application,X703.5
  8. Acid sensitive polyethylene oxide - graft - before adriamycin drug synthesis and characterization,TQ460.1
  9. Cloning and Expression Analysis of Two 9-cis-expoxycarotenoid Dioxygenase (GhNCED1 and GhNCED2) Gene from Cotton under Drought-stress,S562
  10. Preparation of a polypropylene car Bumper,TQ325.14
  11. Iron, Indium Catalyze Amine-involved Coupling and Tandem Reactions,O643.32
  12. Chemical Preparation and Related Biological Study of PET Fiber Applied for Artificial Ligament,R686
  13. Technological Development on EPDM Apply to High-Grade Automobile Seal Strip,TQ333.4
  14. Acid-functionalized Ionic Liquid Catalyzed Hydrolysis of Cellulose and Chitosan under Microwave Irradiation,O643.32
  15. Reaction Performance of Catalytic Pyrolysis and Thermal Pyrolysis of Gasoline from Catalytic Cracking Unit,TE621
  16. CJZJ Frame Filter Press in phosphate tailings dewatering,TD926.4
  17. The Synthesis of Oxazolines and Benzoxazoles with PPh3/DDQ as the Dehydrating Reagents,R914
  18. Properties Measurement of Task-specific Ionic Liquids and Fixation of CO2 Using Ionic Liquids,O647.3
  19. Ethylene - vinyl acetate copolymer based on a continuous phase of dual / polycaprolactone blend of the porous material prepared,O631.3
  20. Recycling the modification of poly (ethylene terephthalate),TQ323.4.1

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