The influence of bromide-based ionic liquids on solubility of {LiBr (1) + water (2)} system. Experimental (solid + liquid) phase equilibrium data. Part 2
(3)} ternary systems, with fixed IL to LiBr mass fraction w = 0.3 for all ILs and w = 0.1 and 0.2 for ammonium-based ILs and [MOR1,3SO3] have been performed by dynamic method. For all of the tested systems the transition point betweenlithium bromide dihydrate and monohydrate form was observed. Significant solubility enhancement of lithium bromide in water was obtained by adding ionic liquid, or zwitterionic
Silylated quaternary ammonium salts – ionic liquids with hydrophobic cations
作者:Matjaž Koželj、Abdelbast Guerfi、Karim Zaghib
DOI:10.1039/c4ta02675f
日期:——
class of ionicliquids 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 quaternaryammoniumsalts with a trialkylsilyl group changes cations' properties from hydrophilic to hydrophobic; both constituents (cations and anions) of resulting ionicliquids have a hydrophobic
通过双(全氟烷基磺酰基)酰胺阴离子和O-甲硅烷基化的胆碱样阳离子的组合获得另一类离子液体。具有三烷基甲硅烷基的羟烷基取代的季铵盐的亲水羟基的保护将阳离子的性质从亲水变为疏水。所得离子液体的两种成分(阳离子和阴离子)均具有疏水性。研究了它们的基本物理和化学性质。离子液体的中等粘度和电导率遵循它们对温度的依赖性的Vogel-Tammann-Fulcher模型。所有离子液体均显示出与CV测量所预期的相似的电化学稳定性。相对于Li / Li ,大多数化合物的阴极稳定性低于0 V+,并且与Li / Li +相比,阳极分解通常会在超过5 V的条件下开始。这些性质表明,这些离子液体具有制备高压锂电池电解液的潜力。
IONIC COMPOUNDS HAVING A SILYLOXY GROUP
申请人:HYDRO-QUÉBEC
公开号:US20150093655A1
公开(公告)日:2015-04-02
There is provided an ionic compound having attached thereto a silyloxy group. There is also provided methods of making this ionic compound as well as electrolytes, electrochemical cells and capacitors comprising this ionic compound.
Zn-based ionic liquids as highly efficient catalysts for chemical fixation of carbon dioxide to epoxides
作者:Mengshuai Liu、Fangxiao Wang、Lei Shi、Lin Liang、Jianmin Sun
DOI:10.1039/c4ra14111c
日期:——
The novel Zn-based task-specific ionic liquids (Zn-TSILs) catalysts were developed for the coupling of carbondioxide and epoxides to form cyclic carbonates under mild reaction conditions without using additional organic solvents and cocatalysts. Due to the synergistic effects of the cation and anion in this catalytic system, excellent yields and selectivities to cyclic carbonates were achieved with
Abstract The utilization of the taskspecificoniumsaltsupported substrates in ionic liquids as solvents (i.e., binary taskspecific ionic liquids) for palladium nanoparticle catalyzed Heck cross-coupling reactions is presented. Adequate substrates have been prepared and used leading to expected products in very high yields. Exceptionally high turnover (TON = 940,000, TOF = 208,000) can be achieved