研究了通过控制氧化活化木质素的新型环保方法。比较了六种含有硫酸氢根阴离子的酸性咪唑鎓离子液体的结果。这项研究的主要目标是增加木质素结构中羰基的含量,因为这些可能在电化学应用活性材料中的质子和电子传输中起主要作用。通过多种分析技术(FTIR,13 C CP / MAS NMR和X射线光电子能谱;选定的反应来确定羰基的存在; SEM;ζ电位分析;热重分析/差示热重分析;以及多孔结构分析),就目标应用而言,经确定,用3-环己氧基甲氧基-1-甲基咪唑硫酸氢盐处理后获得的产物具有良好的性能。电化学测试证明,所获得的材料可用作锂电池的负极。结果表明,木质素被离子液体活化可以增加其容量并保持稳定性。
Process for conducting aldol condensation reactions in ionic liquid media
申请人:——
公开号:US20030050512A1
公开(公告)日:2003-03-13
The present invention is related to a method for forming aldol condensation products, comprising reacting at least one aldehyde starting material in the presence of an ionic liquid medium and a basic catalyst at a temperature range of from about −20° C. to about 300° C. and at a pressure range of from about 1 atm to about 1000 atm for a sufficient time to form the aldol condensation products. The invention is also directed to a method for forming aldol condensation products, comprising reacting at least one aldehyde starting material in the presence of a basic ionic liquid medium at the same parameters specified above. The advantage of the instant invention is the increased selectivity and productivity of the resulting aldol condensation products formed in ionic liquid media, along with the ability to recycle the ionic liquid for use in producing additional aldol condensation products.
we report the development of biohybridcatalysts that are capable of catalyzing the aldol reaction. The use of biotinylated imidazolium salts in combination with racemic or enantiomerically pure catalytic anions allowed us to study the adaptive and cooperative positioning of the anionic catalyst inside the protein. Supramolecular encapsulation of the biotinylated catalyst into avidin resulted in good
PRODUCTION PROCESS FOR FLUOROSULFONYLIMIDE AMMONIUM SALT
申请人:Tsubokura Shiro
公开号:US20130331609A1
公开(公告)日:2013-12-12
A compound [II] such as ammonium N,N-di(fluorosulfonyl)imide is obtained by reacting a compound [I] such as N,N-di(chlorosulfonyl)imide and NH
4
F (HF)
p
. A compound [IV] such as an N,N-di(fluorosulfonyl)imide alkali metal salt is obtained by reacting the obtained compound [II] and an alkali metal compound or the like.
作者:Zhibin Song、Wei Huang、Yan Zhou、Zi-Qi Tian、Zhang-Min Li、Duan-Jian Tao
DOI:10.1039/c9gc03646f
日期:——
molybdate-based ionicliquids (Mo-ILs) has been designed and developed for the first time toward molecular oxygen activation for highly efficient tandem oxidative catalysis. Three diverse one-pot oxidative cascade processes for the syntheses of various flavones, imines, and benzyl benzoates were achieved with good to excellent yields using the Mo-IL [Bmim]2[MoO4] as a catalyst under air conditions. The
A convenient and general preparative approach for tartrate-derived organic salts with bulky non-coordinating cations is described. This route is based on neutralisation of tartaric acid with cation hydroxides in aqueous solution. A series of 24 tartrate salts was prepared by systematic variation of the hemi- or bis-tartrate anion and the nature of the organic cation. Chirality of the anion was also explored as a vector for structural modification. Complete characterisation, including X-ray crystallography, was carried out. This comparative study of the physicochemical properties of these salts led to the identification of several informative trends useful for designing proper tartrate-based chiral ionic liquids.
本文介绍了一种制备酒石酸衍生有机盐与大块非配位阳离子的方便而通用的方法。该方法基于酒石酸与阳离子氢氧化物在水溶液中的中和反应。通过系统地改变半酒石酸阴离子或双酒石酸阴离子以及有机阳离子的性质,制备出一系列 24 种酒石酸盐。此外,还将阴离子的手性作为结构改造的载体进行了探索。我们还进行了包括 X 射线晶体学在内的全面表征。通过对这些盐的理化性质进行比较研究,发现了一些有用的趋势,有助于设计适当的酒石酸手性离子液体。