نتایج جستجو برای: brönsted acidic ionic liquids

تعداد نتایج: 93993  

Journal: :Physical chemistry chemical physics : PCCP 2014
Doris Rengstl Veronika Fischer Werner Kunz

In this article a strategy is proposed for the design of low toxic, room temperature liquid low-melting mixtures (LMMs) which are entirely composed of natural materials. From literature it is well known that, in general, deep eutectic solvents based on choline chloride and dicarboxylic acids are LMMs, but not liquids at room temperature, with one exception: a 1 : 1 molar mixture of malonic acid...

2008
Robert S. Legge Paulo Lozano

A porous metal electrospray emitter has been tested with four different ionic liquids including those comprised with heavy ions. Time of flight experiments were conducted to characterize the emitted species for each liquid and the amount of emitted current as a function of applied voltage. The results indicate that for each ionic liquid, high quality pure ions were emitted containing no observa...

Journal: :Molecules 2009
Hon Man Yau Si Jia Chan Stephen R D George James M Hook Anna K Croft Jason B Harper

While there has been much effort in recent years to characterise ionic liquids in terms of parameters that are well described for molecular solvents, using these to explain reaction outcomes remains problematic. Herein we propose that many reaction outcomes in ionic liquids may be explained by considering the electrostatic interactions present in the solution; that is, by recognising that ionic...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2003
Kazunori Nakashima Fukiko Kubota Tatsuo Maruyama Masahiro Goto

Octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) dissolved in an ionic liquids, 1-butyl-3-methyl-imidazolium hexafluorophosphate, greatly enhances extractability and selectivity of lanthanide cations compared to that dissolved in conventional organic solvents; further, the recovery of lanthanides extracted into ionic liquids can be accomplished using several stripping solution...

2010
Rihab Al-Salman Xiangdong Meng Jiupeng Zhao Yao Li Ulrich Kynast Marina M. Lezhnina Frank Endres

The fascinating properties of ionic liquids make it possible to synthesize semiconductor nanostructures via a simple and low-cost electrochemical pathway. The present paper summarizes our recent work on the synthesis of Si, Ge, and SixGe1–x nanostructures from ionic liquids: thin films, nanowires and photonic crystals. We also introduce our first results on the template-assisted electrodepositi...

2010
S G Raju

Room temperature ionic liquids contain molecular ions which are, in general, monovalent. In the present work, the intermolecular structure, dynamics and intermediate range structure in a model ionic liquid, whose cation and anion are monoand di-valent respectively, have been explored. Charge compensation is met by doubling the mole fraction of the cations in the sample. Through coarse grained m...

2008
H. Zhao

Our long-term goal is to develop a methodology to improve enzyme activity in non-aqueous media in order to create safer and more effective pharmaceuticals to treat human diseases. The major objective of this proposal is to develop enzyme-dissolving ionic liquids, evaluate the enzyme activity, stability and enantioselectivity in these ionic liquids under microwave radiation, and determine the pr...

Abdol Hajipour, Ifa Mahboobi Dehbane

α-Amino nitriles are synthesized in a one-pot, three-component coupling of aldehydes (or ketones), aniline, and trimethylsilyl cyanide using a catalytic amount of choline chloride.2ZnCl2 as a bio Lewis acidic ionic liquid. Mild Lewis acidic characteristic of this ionic liquid allows efficient synthesis of α-amino nitriles from acid sensitive aldehydes.

Journal: :Physical chemistry chemical physics : PCCP 2015
Laure Pison Karina Shimizu George Tamas José Nuno Canongia Lopes Edward L Quitevis Margarida F Costa Gomes

The solubility of n-butane and 2-methylpropane (isobutane) in three ionic liquids - 1-(2-methylpropyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [(2mC3)C1im][Ntf2], 1-(3-methylbutyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [(3mC4)C1im][Ntf2] and 1-methyl-3-pentylimidazolium bis(trifluoromethylsulfonyl)imide [C5C1im][Ntf2] - has been measured at atmospheric pressure fro...

Journal: :Inorganic chemistry 2008
Peter Nockemann Ben Thijs Tatjana N Parac-Vogt Kristof Van Hecke Luc Van Meervelt Bernard Tinant Ingo Hartenbach Thomas Schleid Vu Thi Ngan Minh Tho Nguyen Koen Binnemans

Imidazolium, pyridinium, pyrrolidinium, piperidinium, morpholinium, and quaternary ammonium bis(trifluoromethylsulfonyl)imide salts were functionalized with a carboxyl group. These ionic liquids are useful for the selective dissolution of metal oxides and hydroxides. Although these hydrophobic ionic liquids are immiscible with water at room temperature, several of them form a single phase with ...

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