نتایج جستجو برای: liquids

تعداد نتایج: 21511  

Journal: :journal of oil, gas and petrochemical technology 2014
saideh marhamati amir abbas izadpanah ahmad azari mojtaba rezaei

the simplified perturbed chain statistical associating fluid theory (spc-saft) equation of state (eos) was proposed to describe the thermodynamic properties of pure ionic liquids (ils). a set of spc-saft parameters for 2 ils was obtained by fitting the experimental liquid densities data over a wide range of temperature at atmospheric pressure. good agreement with experimental density data was o...

Journal: :organic chemistry research 2016
khodabakhsh niknam mohsen khataminejad

a sequential process strategy was introduced for the synthesis of 2,3,4,5-tetrasubstituted pyrroles by the formation of benzoin from the corresponding aromatic aldehyde and followed by condensation reaction with 1,3-dicarbonyl compounds and ammonium acetate in the presence of diethylene glycol-bis(3-methylimidazolium) dihydroxide as catalyst in refluxing ethanol. the recycled catalyst could be ...

Journal: :Analytical chemistry 2003
Simon M Mwongela Abdulqawi Numan Nicole L Gill Rezik A Agbaria Isiah M Warner

In this study, we report the use of ionic liquids as modifiers in the separation of achiral and chiral analytes in micellar electrokinetic chromatography. In this investigation, polymeric surfactants and ionic liquids were added to a low-conducting buffer solution. The polymeric surfactants used in this study were poly(sodium N-undecylelinic sulfate) and poly(sodium oleyl-l-leucylvalinate). The...

2015
Shiguo Zhang Kaoru Dokko Masayoshi Watanabe

Solidification of fluidic ionic liquids into porous materials yields porous ionic networks that combine the unique characteristics of ionic liquids with the common features of polymers and porous materials. This minireview reports the most recent advances in the design of porous ionic liquids. A summary of the synthesis of ordered and disordered porous ionic liquid-based nanoparticles or membra...

Journal: :The journal of physical chemistry. B 2009
Huimin Luo Gary A Baker Je Seung Lee Richard M Pagni Sheng Dai

Protic ionic liquids are synthesized via proton transfer from acids to organic bases. One of the key issues associated with conventional protic ionic liquids is the thermal instability resulting from temperature-induced decomposition via reverse proton transfer. This shortcoming significantly hampers the use of these protic ionic liquids in separations, electrochemical capacitors, fuel cells, a...

2018
Christian Agatemor Kelly N. Ibsen Eden E. L. Tanner Samir Mitragotri

Advances in the field of ionic liquids have opened new applications beyond their traditional use as solvents into other fields especially healthcare. The broad chemical space, rich with structurally diverse ions, and coupled with the flexibility to form complementary ion pairs enables task-specific optimization at the molecular level to design ionic liquids for envisioned functions. Consequentl...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1998
mohammad hossein keshavarz ali boushehri

a second virial coefficient correlation suitable for two different temperatures ranges, (t*)-2£180 and (t*)-2>180, where t* is rt/dhvap is presented. the equation of state can be calculated for different, complicated non-polar, and slightly polar liquid mixtures at any temperature over the range from ttp to tc and up to high pressures. the latent heat of vaporization and density at the triple p...

2013
Paul Walden

Ionic liquids − defined as salts with a melting point below 100 ◦C – date back to 1914, when Paul Walden reported on [C2H5NH3][NO3], a salt with a melting point of +12 ◦C. While Walden was surely ahead of his time, ionic liquids made an impressive development during the last 10 years. This is due to their unique portfolio of properties: high temperature stability (in favourable cases up to 400 ...

Journal: :The Journal of Physical Chemistry 1922

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