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Syntheses and applications of ionic liquids as solvents and reactants : natural substances dissolution, esterification ionic tagging

Bin Zhao,Walter Leitner-2012-01-01-RWTH Publications (RWTH Aachen)
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The present thesis deals with the applications of ionic liquids (ILs), especially carboxylate-based ILs. The first part describes the syntheses and uses of ILs as solvents for natural compounds to dissolve cellulose and to extract betulin. The second part reveals their applications as reactants for esterification and ionic tagging. Dissolution of cellulose allows easier processing of this important biogenic feedstock. For this, ILs have been proposed. To foster understanding of the structure activity relationship of IL and cellulose and to provide mandatory data for computer-aided cellulose solvent design, a systematic approach towards the synthesis and experimental determination was carried out and is described in Chapter 2. Three homologous series of all 27 combinations of the three cations: 1,3-dimethylimidazolium ([DMIm]), 1-ethyl-3-methylimidazolium ([EMIm]), and N,N-diethyl-N,N-dimethylammonium ([DEDMN]) with nine carboxylate anions were synthesized and characterized. Cellulose s

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The present thesis deals with the applications of ionic liquids (ILs), especially carboxylate-based ILs. The first part describes the syntheses and uses of ILs as solvents for natural compounds to dissolve cellulose and to extract betulin. The second part reveals their applications as reactants for esterification and ionic tagging. Dissolution of cellulose allows easier processing of this important biogenic feedstock. For this, ILs have been proposed. To foster understanding of the structure activity relationship of IL and cellulose and to provide mandatory data for computer-aided cellulose solvent design, a systematic approach towards the synthesis and experimental determination was carried out and is described in Chapter 2. Three homologous series of all 27 combinations of the three cations: 1,3-dimethylimidazolium ([DMIm]), 1-ethyl-3-methylimidazolium ([EMIm]), and N,N-diethyl-N,N-dimethylammonium ([DEDMN]) with nine carboxylate anions were synthesized and characterized. Cellulose s

Keywords

DissolutionIonic liquidIonic bondingChemistryNatural (archaeology)Chemical engineeringInorganic chemistryOrganic chemistry

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