Amino-Functional Imidazolium Ionic Liquids for CO2 Activation and Conversion to Form Cyclic Carbonate
摘要:
A series of amino-functional imidazolium ionic liquids have been prepared and used as catalysts for cycloaddition of CO2 with epoxide. The reactions generated the cyclic carbonate even at room temperature under atmospheric pressure. Under the optimal reaction conditions, the propylene carbonate was yield to 98.0 % in the presence of [APbim]I, and the ionic liquids could be reused at least nine times without noticeable decrease in activity and selectivity. Besides, the reaction mechanism was proposed.Cycloaddition of CO2 with epoxides catalyzed by amino-functionalized imidazolium ionic liquid can achieve CO2 activation and conversion directly. The reactions generated the corresponding products even at room temperature under atmospheric pressure. Amino-functionalized imidazolium ionic liquid has showed excellent catalytic activity, reusability and general applicability.
Exploration of amino-functionalized ionic liquids as ligand and base for Heck reaction
作者:Jie Liu、Hongqiang Liu、Lei Wang
DOI:10.1002/aoc.1624
日期:——
A kind of amino‐functionalized ionicliquid has been prepared and investigated as ligand and base for the Heckreactions between aryl iodides and bromides with olefins in the presence of a catalytic amount of Pd submicron powder in [Bmim]PF6. The reactions generated the corresponding products in excellent yields under mild reaction conditions. The generality of this catalytic system to the different
Preparation of Functionalized Imidazolium Salts under Microwave Irradiation
作者:Shih‐Kang Fu、Shiuh‐Tzung Liu
DOI:10.1080/00397910600634464
日期:2006.6
Abstract A direct alkylation of a substituted imidazole to prepare the corresponding functionalized ionic liquid has been developed in excellent yields undermicrowaveirradiation.
摘要 取代咪唑直接烷基化制备相应的功能化离子液体已在微波辐射下以优异的产率得到开发。
Reversible fabrication and self-assembly of a gemini supra-amphiphile driven by dynamic covalent bonds
A smart gemini supra-amphiphile behaving with pH/CO2 dual-sensitive hierarchical self-assembly was fabricated under the effect of dynamic covalent bonds.
在动态共价键的作用下,制备了一种具有pH/CO2双敏感分层自组装行为的智能双子座超分子。
Magnetic graphene oxide modified by chloride imidazole ionic liquid for the high-efficiency adsorption of anionic dyes
作者:Huan Wang、Yinmao Wei
DOI:10.1039/c6ra27530c
日期:——
Magnetic graphene oxide modified with 1-amine-3-methyl imidazole chloride ionic liquid (LI-MGO) was prepared through chemical co-precipitation and modified using 1-amine-3-imidazolium chloride ionic liquid. The as-prepared LI-MGO was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared spectrometry (FT-IR). The adsorption properties were evaluated
通过化学共沉淀法制备了用1-胺-3-甲基咪唑氯化物离子液体改性的磁性氧化石墨烯,并使用1-胺-3-咪唑鎓氯化物离子液体进行了改性。使用X射线衍射(XRD),透射电子显微镜(TEM)和傅里叶变换红外光谱(FT-IR)对制备的LI-MGO进行表征。通过两种阴离子染料橙色IV(OIV)和格伦黑R(GR)以及两种阳离子染料dye啶橙(AO)和结晶紫(CV)的吸附实验评估了其吸附性能。结果表明,吸附数据符合Langmuir等温线并遵循伪二级动力学。GR,OIV,AO和CV的最大吸附容量为588.24、57.37、132.80和69.44 mg g -1分别为298 K 由于静电相互作用,LI-MGO对阴离子染料的选择性吸附比磁性氧化石墨烯(MGO)更好。而且,LI-MGO吸附剂可以被磁分离并且易于制备。结果表明,LI-MGO作为水处理中去除阴离子染料的高效环保吸附剂具有巨大潜力。
VERFAHREN ZUR HERSTELLUNG CARBONAT-TERMINIERTER VERBINDUNGEN