نتایج جستجو برای: chemical liquids

تعداد نتایج: 397571  

2018

Ionic liquids exhibit a remarkably diverse interfacial chemistry. Recent theoretical and experimental results show that conventional double layers do not form on metal electrodes in ionic liquid systems, rather a multilayer morphology is present. The number of layers and the strength of adsorption are strongly dependent on ionic liquid chemical species, solutes and applied electrode potential. ...

Journal: :Aquatic toxicology 2005
Adam Latała Piotr Stepnowski Marcin Nedzi Wojciech Mrozik

Interest in ionic liquids for their potential in different chemical processes is increasing, as they are claimed to be environmentally benign and are very good non-volatile solvents for a wide range of applications. With regard to their physical and chemical characteristics, the properties of ionic liquids can be modified over a wide range because the cation's fine structure and the anion's ide...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
C Bauer S Dietrich

Based on a microscopic density functional theory, we investigate the morphology of thin liquid-like wetting films adsorbed on substrates endowed with well-defined chemical heterogeneities. As paradigmatic cases we focus on a single chemical step and on a single stripe. In view of applications in microfluidics, the accuracy of guiding liquids by chemical microchannels is discussed. Finally we gi...

Journal: :Physical chemistry chemical physics : PCCP 2016
Vijay Beniwal Anil Kumar

Physico-chemical properties of liquid mixtures in general display large deviations from linear behaviour, arising out of complex specific and non-specific intermolecular interactions. The polarity of liquid mixtures displaying large positive and negative deviations can be minimized and linear mixing can be achieved in liquids using a pseudo-solvent methodology. The work described herein is desi...

Journal: :Molecules 2013
Nadège Ferlin Sylvain Gatard Albert Nguyen Van Nhien Matthieu Courty Sandrine Bouquillon

D-Xylose-based ionic liquids have been prepared from D-xylose following a five steps reaction sequence, the key step being a click cycloaddition. These ionic liquids (ILs) have been characterized through classical analytical methods (IR, NMR, mass spectroscopy, elemental analysis) and their stability constants, Tg and Tdec, were also determined. Considering their properties and their hydrophili...

2018

Ionic liquids exhibit a remarkably diverse interfacial chemistry. Recent theoretical and experimental results show that conventional double layers do not form on metal electrodes in ionic liquid systems, rather a multilayer morphology is present. The number of layers and the strength of adsorption are strongly dependent on ionic liquid chemical species, solutes and applied electrode potential. ...

2012
L. Andreani J. D. Rocha

This paper discusses the feasibility of the use of ionic liquids as catalysts in the biodiesel production field, describing some studies already published in the literature on this theme. Ionic liquids are regarded as a new generation of catalysts in the chemical industry, with several uses in different commercial segments. However only a few publications involving this topic can be found in th...

2016
Marta Falkowska Daniel T Bowron Haresh G Manyar Christopher Hardacre Tristan G A Youngs

Organic solvents, such as cyclohexane, cyclohexene, methylcyclohexane, benzene and toluene, are widely used as both reagents and solvents in industrial processes. Despite the ubiquity of these liquids, the local structures that govern the chemical properties have not been studied extensively. Herein, we report neutron diffraction measurements on liquid cyclohexane, cyclohexene, methylcyclohexan...

Journal: :Chemical communications 2013
Yen-Liang Liu Ming-Chung Tseng Yen-Ho Chu

Based on specific chemical reactions carried out at ambient temperature, an ultrasensitive and chemoselective measurement of both acyclic and cyclic ketone gases, such as acetone (a disease biomarker) and cyclohexanone (a signature chemical emanating from C-4 plastic explosives), in real time was efficiently achieved on QCM chips thin-coated with sensing ionic liquids.

2011
Bhupinder Singh Sekhon

Ionic liquids (ILs) are largely made of ions and short-lived ion pairs. These often possess a unique combination of physical and chemical properties which are not available with molecular solvents. ILs are dynamic, attractive and rich research area and are gaining considerable attention as promising molten materials for a variety of applications in pharmaceutical and biotechnology fields. Ionic...

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