174899-86-6Relevant articles and documents
Silylated quaternary ammonium salts-ionic liquids with hydrophobic cations
Ko?elj, Matja?,Guerfi, Abdelbast,Zaghib, Karim
, p. 15964 - 15971 (2014)
Another class of ionic liquids was obtained by a combination of bis(perfluoroalkylsulfonyl)amide anions and O-silylated choline like cations. The protection of the hydrophilic hydroxyl group of hydroxyalkyl substituted quaternary ammonium salts with a trialkylsilyl group changes cations' properties from hydrophilic to hydrophobic; both constituents (cations and anions) of resulting ionic liquids have a hydrophobic character. Their essential physical and chemical properties were investigated. Moderate viscosity and conductivity of ionic liquids follow the Vogel-Tammann-Fulcher model of their dependency on the temperature. All ionic liquids show similar electrochemical stability as anticipated from CV measurements. The cathodic stability for most compounds is below 0 V vs. Li/Li+, and anodic decomposition starts typically over more than 5 V vs. Li/Li+. These properties suggest that these ionic liquids have potential for the preparation of electrolytes for high voltage lithium batteries. This journal is
Bis(trifluoromethylsulfonyl)amide based "polymeric ionic liquids": Synthesis, purification and peculiarities of structure-properties relationships
Shaplov, Alexander S.,Lozinskaya, Elena I.,Ponkratov, Denis O.,Malyshkina, Inna A.,Vidal, Frederic,Aubert, Pierre-Henri,Okatova, Ol'ga V.,Pavlov, George M.,Komarova, Lidiya I.,Wandrey, Christine,Vygodskii, Yakov S.
, p. 74 - 90 (2011)
A series of bis(trifluoromethylsulfonyl)amide based "polymeric ionic liquids" (PILs) as high molecular mass analogues of the corresponding imidazolium, ammonium and pyrrolidinium ionic liquids (ILs) was synthesized with high purity and fully characterized including electrochemical properties. The PILs differed by the nature of the cation, the quantity of the ionic centers in each monomer repeating unit, and the alkyl length of the spacer. Two novel ionic liquid like monomers (ILMs), namely 1,3-bis(N,N,N-trimethylammonium)-2- propylmethacrylate bis(trifluoromethylsulfonyl) amide (ILM-2) and N-[(2-methacryloyloxy)-ethyl]-N-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide (ILM-4) were synthesized and characterized. Optimal conditions for the free-radical polymerization of the ILMs were identified for the first time. It was demonstrated that, among the tested organic solvents, 1-methyl-3- ethylimidazolium bis(trifluoromethylsulfonyl)amide IL was the best reaction medium in terms of the achievement of high polymer yields and molecular masses. For the first time, the influence of the residual monomer presence inside the PIL film on the resultant conductivity was clearly shown. The impact of the molecular mass of the PILs on the ionic conductivity was firstly studied as well. Finally, the copolymerization of ILMs with poly(ethylene glycol)dimethacrylate (PEGDM) was carried out yielding tight elastic films with the highest conductivity equal to 3.2 × 10-6 S/cm at 25°C.
Highly efficient synthesis of dimethyl carbonate from methanol and carbon dioxide using IL/DBU/SmOCl as a novel ternary catalytic system
Chaugule, Avinash A.,Bandhal, Harshad A.,Tamboli, Ashif H.,Chung, Wook-Jin,Kim, Hern
, p. 87 - 91 (2016)
Excellent yield of dimethyl carbonate (DMC) was obtained by direct physical or chemical adsorption of carbon dioxide on [EmimOH][NTf2] ionic liquid (IL) in the presence of samarium oxychloride (SmOCl) and 1,8-diazabicyclo[2.2.2]undec-7-ene (DBU) as a super base. The novel ternary catalyst system consisting of [EmimOH][NTf2], DBU, and SmOCl was found to appreciably convert methanol (13.01%) to DMC with excellent selectivity (99.13%). The adsorption of CO2 on IL in the presence of DBU was analyzed by 13C experiment. Moreover, catalytic reactivity of SmOCl and OH-functional group was proved by a predictable mechanism. Various parameters such as reaction temperature, pressure, reaction time, and reusability of catalyst were investigated to maximize DMC yield.
Dissolution of oligo(tetrafluoroethylene) and preparation of poly(tetrafluoroethylene)-based composites by using fluorinated ionic liquids
Tsurumaki, Akiko,Ohno, Hiroyuki
supporting information, p. 409 - 412 (2018/02/27)
Fluorophilic ionic liquids (ILs) showing enhanced compatibility with poly(tetrafluoroethylene) (PTFE) have been newly synthesised. The as-designed ILs contributed both to the dissolution of PTFE oligomers and to the preparation of composites with PTFE with no fear of bleed-out of the ILs.
Method for preparing high-added-value chemical product through catalysis of glycerin
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Paragraph 0044; 0045, (2017/03/21)
The invention discloses a method for preparing a high-added-value chemical product through catalysis of glycerin. According to the synthesis method, the fact that activated glycerin is converted into a high-added-value glycerin derivative is taken as a target, activating reaction is carried out in a hydroxyl functionalized ionic liquid system, and glycerin conversion rate data is obtained through a nuclear magnetic characterization means, so that the activation degree of glycerin is evaluated. The preparation method provided by the invention is simple and mild in reaction conditions and replaces a conventional method taking metal as a catalyst; since an ionic liquid catalytic reaction system is used, so that good environment friendliness and repeatability are realized, an ionic liquid preparation process is environment-friendly and good atom economy is realized.
