نتایج جستجو برای: brönsted acidic ionic liquids

تعداد نتایج: 93993  

2011
Steven P. Berg Joshua L. Rovey

Imidazole-based energetic ionic liquids capable of dual-mode chemical monopropellant or bipropellant and electric electrospray rocket propulsion are investigated. A literature review of ionic liquid physical properties is conducted to determine an initial set of ionic liquids that show favorable physical properties for both modes, followed by numerical and analytical performance simulations. Of...

2009
Ye Wang Minglei Tian Wentao Bi Kyung Ho Row

Ionic liquids, considered "green" chemicals, are widely used in many areas of analytical chemistry due to their unique properties. Recently, ionic liquids have been used as a kind of novel additive in separation and combined with silica to synthesize new stationary phase as separation media. This review will focus on the properties and mechanisms of ionic liquids and their potential application...

Journal: :Dalton transactions 2008
Mikhail Gorlov Lars Kloo

The potential of room-temperature molten salts (ionic liquids) as solvents for electrolytes for dye-sensitized solar cells has been investigated during the last decade. The non-volatility, good solvent properties and high electrochemical stability of ionic liquids make them attractive solvents in contrast to volatile organic solvents. Despite this, the relatively high viscosity of ionic liquids...

2010
Aniruddha Paul Anunay Samanta

This review summarizes the photophysical studies carried out in room temperature ionic liquids with explicit focus on those involving time-resolved measurements. Different types of photoinduced processes studied in ionic liquids are discussed with a view to understand the influence of ionic liquids in guiding the course of individual photo-reaction/process and to elucidate the difference betwee...

Journal: :Beilstein Journal of Organic Chemistry 2006
Bruce Pégot Olivier Nguyen Van Buu Didier Gori Giang Vo-Thanh

The asymmetric aza-Diels-Alder reaction of chiral imines with Danishefsky's diene in chiral ionic liquids provides the corresponding cycloadduct with moderate to high diastereoselectivity. The reaction has proved to perform better at room temperature in ionic liquids without either Lewis acid catalyst or organic solvent. Chiral ionic liquids are recycled while their efficiency is preserved.

2013
Wojciech Mrozik Christian Jungnickel Monika Paszkiewicz Piotr Stepnowski

With the constant development of new ionic liquids, the understanding of the chemical fate of these compounds also needs to be updated. To this effect, the interaction of a number of novel ionic liquids with soils was determined. Therefore, three novel headgroups (ammonium, phosphonium, or pyrrolidinium) with single or quaternary substitution were tested on a variety of soils with high-to-low o...

2015
El-Sayed M. Sherif Hany S. Abdo Sherif Zein El Abedin

In this paper we report on the corrosion inhibition of cast iron in Arabian Gulf seawater by two different ionic liquids namely, 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) and 1-butyl-1-methylpyrrolidinium chloride ([Py1,4]Cl). The inhibiting influence of the employed ionic liquids was investigated by weight loss, open circuit potential electrochemical impedance spectroscopy, and cyclic po...

Journal: :iranian journal of catalysis 2012
abdol r. 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.

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