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Synthesization and Basic Study of CO2 Absorption for Amine-immobilized Ionic Liquid

Author: RenYu
Tutor: LiYingXia
School: Beijing University of Chemical Technology
Course: Chemical Engineering and Technology
Keywords: Organic - inorganic graft Ionic liquids Silane coupling agent Characterization CO2 absorption Dynamics
CLC: O621.2
Type: Master's thesis
Year: 2010
Downloads: 246
Quote: 0
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Abstract


In this paper, the grafting of organic - inorganic synthesis of a new Immobilized amino ionic liquid synthesized material and its FT-IR, BET, NMR, TG series characterization study of CO2 absorption properties of CO2 adsorption kinetics equation. That the ionic liquid solid separation of a CO2 absorption further research value of the new organic - inorganic hybrid materials. Three synthetic process, designed for the kind of ionic liquid solid carriers are porous silica, functionalized reagents are three bromopropylamine hydrobromide. The first synthetic process with a silane coupling agent as CG-54, the synthetic method for CG-54 first coupling with silica gel, and then with imidazole reaction was carried out, and finally the synthesis of the final product of the functionalized. The second synthetic process is the reaction of the synthesis process will Cg-54 intermediate product of the reaction with the silica gel with 1 - (p-cyanoethyl) imidazole, the product after ammonia washed functional. Synthesis of the third synthesis process with a synthesis process, silane coupling agent KH-560. Ionic liquid synthesis of three processes through infrared, 13CNMR and elemental analysis to characterize the structure and its thermal stability and structure, characterized by thermal analysis and TG-MS by N2 adsorption-desorption experimental determination of the specific surface area of ??the solid ionic liquid and the pore structure. Ultimately determine the specific configuration of the ionic liquid, and have demonstrated its good thermal stability, high specific surface area and larger pore size. 1 - (p-cyanoethyl)-imidazole and Intermediate A reaction with imidazole directly reacted with the intermediate A more easily compared to its surface amino highest load, so the synthesis of ionic liquids by the process two. CG-54 Synthesis of the ionic liquid than KH-560 was synthesized by the coupling agent by the ionic liquid has a larger specific surface area and pore size, because the molecules of the KH-560 than CG-54 of the molecule. Characterized by in situ infrared and TPD experiments craft a synthesis of the ionic liquid structural changes in the absorption of CO2. TPD measurement of CO2 absorption amount of 0.04mmol / g. Through self-designed device that ionic liquids solid under high pressure CO2 absorption test, 0.4MPa, 0.5MPa and 1.0MPa respectively measured CO2 uptake to 0.068 mmol / g, 0.103 mmol / g and 0.405mmol / g. And the kinetic experiments, fitting out the CO2 adsorption kinetic equation calculated apparent adsorption rate constant K for 0.00123s-1.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Organic Chemistry general issues > Properties of organic compounds
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