Enhancing Task Specific Ionic Liquids’ Thermal Stability by Structural Modification
摘要:
Thermal retro-Michael decomposition of task specific ionic liquids (TSILs) was efficiently suppressed by hydrogenation of the oxobutyl side chain yielding a hydroxyfunctionalized TSIL.
Inter- and Intramolecular Interactions in Imidazolium Protic Ionic Liquids
作者:Anastasia Maria Moschovi、Vassileios Dracopoulos、Vladimiros Nikolakis
DOI:10.1021/jp412352k
日期:2014.7.24
protic ionic liquids (PILs) HCnImNTf2 (n = 0–12) were studied using vibrational spectroscopy (FT-IR/ATR and FT-Raman) and differential scanning calorimetry (DSC). The effect of alkyl substituent length (n = 0–12) and temperature on the relative magnitude of the different interactions is elucidated. For short carbon alkyl chains (n < 3), the PIL structure is affected from intramolecular interaction caused
A process for deacidifying a crude oil and/or crude oil distillate containing organic acids comprising the steps of:
(a) contacting the crude oil and/or crude oil distillate containing organic acids with a basic ionic liquid having a melting point of below 150°C, and extracting at least a portion of the organic acids into the basic ionic liquid as an extract phase; and
(b) separating a crude oil and/or crude oil distillate phase which is reduced in acidity from the basic ionic liquid extract phase.
Experimental study with DFT validation on the effect of radiation on 1-carboxymethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([HOOCCH2MIM][NTf2]) as a solvent and extractant in rapid homogeneous extraction of UO22+ was performed for the first time. The radiolytic products of the anions and cations of [HOOCCH2MIM] [NTf2] were identified by F-19 NMR and high-resolution ESI-MS, respectively, and they were attributed to a decrease in UO22+ partitioning. Experimental study with DFT validation for complexing reactions between [HOOCCH2MIM] [NTf2] and radiolytic products proved that F- competition was one of the main reasons for the decrease in UO22+ partitioning. However, UO22+ partitioning in irradiated [HOOCCH2MIM] [NTf2] can largely be recovered after thorough water washing because of the removal of radiolytic products of [NTf2](-).
[EN] IONIC LIQUIDS AND METHODS FOR USING SAME<br/>[FR] LIQUIDES IONIQUES ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV COLORADO
公开号:WO2009142663A1
公开(公告)日:2009-11-26
The present invention provides compositions comprising ionic liquids and an amine compound, and methods for using and producing the same. In some embodiments, the compositions of the invention are useful in reducing the amount of impurities in a fluid medium or a solid substrate.
Metal- and solvent-free synthesis of aniline- and phenol-based triarylmethanes<i>via</i>Brönsted acidic ionic liquid catalyzed Friedel-Crafts reaction
A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Brönstedacidicionicliquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a