نتایج جستجو برای: chemical liquids

تعداد نتایج: 397571  

Journal: :Physical chemistry chemical physics : PCCP 2009
Douglas R MacFarlane Maria Forsyth Ekaterina I Izgorodina Andrew P Abbott Gary Annat Kevin Fraser

Ionic liquids are liquids comprised totally of ions. However, not all of the ions present appear to be available to participate in conduction processes, to a degree that is dependent on the nature of the ionic liquid and its structure. There is much interest in quantifying and understanding this 'degree of ionicity' phenomenon. In this paper we present transport data for a range of ionic liquid...

Journal: :Physical chemistry chemical physics : PCCP 2011
A Maiti R D Rogers

Pair association in Ionic Liquids is an important quantity that affects many of their physical and chemical properties. However, the association constant is a complex function of the component ions as well as of the solvent environment, and no single theory can compute or predict it with quantitative accuracy. In this work we analyze infinite-dilution association data from a number of recent co...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
D Mattia H H Bau Y Gogotsi

The handling, dispersion, manipulation, and functionalization of carbon nanotubes and nanopipes often require the use of solvents. Therefore, a good understanding of the wetting properties of the carbon nanotubes is needed. Such knowledge is also essential for the design of nanotube-based nanofluidic devices, which hold the promise of revolutionizing chemical analysis, separation, drug delivery...

Journal: :Molecules 2016
Simge Çınar Michael D Schulz Stephanie Oyola-Reynoso David K Bwambok Symon M Gathiaka Martin Thuo

Pot-in-pot reactions are designed such that two reaction media (solvents, catalysts and reagents) are isolated from each other by a polymeric membrane similar to matryoshka dolls (Russian nesting dolls). The first reaction is allowed to progress to completion before triggering the second reaction in which all necessary solvents, reactants, or catalysts are placed except for the starting reagent...

H. Ghafourian M. R. Ardakani S. Hassanpour Aslani, S. Torabi

Applying Nanoporous Materials is an appropriate method for improving chemical quality of the water due to high surface area, internal porous structure (porosity), high absorption capability of harmful gases and liquids, and capability of reactivating the surface. Therefore, actions were carried out in order to investigate the effect of Activated carbon and Zeolite on reducing the total dissolve...

ژورنال: مواد پرانرژی 2015

A hypergolic bipropellant s consist of fuels and oxidizers that can ignite rapidly upon mixing without external ignition devices . This self –ignition technology makes the engine ignition more reliable with repeated use. Recently, ionic liquids with the dicyanamide anion which shown good hypergolic properties when contacted with common oxidizer such as concentrated nitric acid, were attracte...

Journal: :Advanced materials 2012
Verner K Thorsmølle Daniel Topgaard Jan C Brauer Shaik M Zakeeruddin Björn Lindman Michael Grätzel Jacques-E Moser

Salts in the liquid phase at room temperature–ionic liquids– have recently received increased attention due to their unique properties.[1] These include high ionic conductivity, high thermal and chemical stability, broad electrochemical windows, non-volatility and non-flammability. These important properties make them versatile alternatives to conventional solvent-based systems, and their poten...

Different crystal phase with a same chemical structure, polymorphous, is a specific physical characteristic which determine the end usage of pigments especially in high performance ones. Diketopyrrolopyrrole DPP derivatives, as one of the innovative in heterocyclic pigments, follow this pattern. Synthesis of pigment red 254 in selected crystal phase using ionic liquids was achieved without any ...

2012
Hideaki Shirota Hiroki Fukazawa

It is well known that the physical and chemical properties of ionic liquids (ILs) vary when the combination of cations and anions changes. It is thus possible to tune the properties of ILs on demand by choosing a suitable cation and anion combination. Consequently, ILs are commonly referred to as designer fluids. Many studies have demonstrated the usefulness of this strategy for controlling the...

2006
Evelyn Maureen White

This experimental investigation was carried out in order to determine the electrical characteristics of several hydrocarbons of low dielectric constant. All measurements of the conduc ivity were below 1 picomho/m (u.10A/V-m 10-14 ohm'lcml). This category ncludes most petroleum products, petroleum distillates made conductive by adding anti-static additives, and liquified gases. Of particular int...

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