نتایج جستجو برای: temperature ionic liquid

تعداد نتایج: 676848  

Journal: :journal of the iranian chemical research 0
ming lu college of chemical engineering, nanjing university of science and technology, nanjing 210094, pr china hui jiang college of chemical engineering, nanjing university of science and technology, nanjing 210094, pr china

in this work, benzyl alcohol was obtained in 96% excellent yield by hydrolysis of benzyl chloride catalyzedby the recyclable temperature-dependant phase-separation system that comprised the ionic liquid peg1000-dail[bf4], toluene and ferric sulfate under homogeneous catalysis in aqueous media. this novel methodnot only enhanced the yield, but also made the operating units easy workup. the catal...

Journal: :Chemical communications 2012
Tomoki Ogoshi Naosuke Ueshima Tada-aki Yamagishi Yoshiyuki Toyota Noriyoshi Matsumi

A room-temperature ionic liquid containing macrocyclic compound pillar[5]arene in its core was synthesized. The ionic liquid showed high thermal stability, moderate ionic conductivity and solvent-free complexation ability with the guest tetracyanoethylene.

The density (d), speed of sound (u) and electrolytic conductivity (Λ) for systems containing acetaminophen, ionic liquid {1-octyl-3-methyl imidazolium bromide, [OMIm] Br} and water have been measured at T = 293.15-308.15 K. The measured data have been applied to calculate, standard partial molar volume ( ), Hepler’s constant , apparent molar isentropic compressibility...

An ionic liquid (IL) is a salt in the liquid state. In some contexts, the term has been restricted to salts whose melting point is below some arbitrary temperature, such as 100 °C. While ordinary liquids such as water and gasoline are predominantly made of electrically neutral molecules, ionic liquids are largely made of ions and short-lived ion pairs. These substances are variously called liqu...

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...

In this study, the phase diagram and thermodynamic properties of Ti-O system up to 30 mole percent of oxygen was calculated with Calphad method. In this range of oxygen, Ti-O system includes αTi, βTi and liquid phases. αTi and βTi were modeled by “sublattice” model and the model of liquid phase was modeled by “ionic liquid”. Gibbs energy parameters ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
abdolreza hajipour fatemeh mohammadsaleh

a simple and efficient one-pot method for the preparation of aromatic iodides has been developed by sequential diazotization–iodination of aromatic amines employing sodium nitrite and sodium iodide in the presence of acidic ionic liquid n-methyl-2-pyrrolidonum hydrosulfate ([h-nmp]hso4). the diazonium salts that are formed by this ionic liquid are stable at room temperature and react rapidly wi...

N1,N1,N2,N2-tetramethyl-N1,N2-bis(sulfo)ethane-1,2-diaminium chloride ([TMBSED][Cl]2) was synthesized as an acidic ionic liquid and characterized using FT-IR, 1H and 13C NMR, mass spectroscopy, TG, DTG and DTA techniques. This ionic liquid was employed as efficient catalyst for the extremely facile and efficient synthesis of dihydropyrrol-2-ones and functionalized tetrahydropyridines. One-pot f...

2009
KENNETH N. MARSH JOAN F. BRENNECKE ROBERT D. CHIRICO MICHAEL FRENKEL ANDREAS HEINTZ JOSEPH W. MAGEE COR J. PETERS LUIS PAULO N. REBELO KENNETH R. SEDDON

This article summarizes the results of IUPAC Project 2002-005-1-100 (Thermodynamics of ionic liquids, ionic liquid mixtures, and the development of standardized systems). The methods used by the various contributors to measure the thermophysical and phase equilibrium properties of the reference sample of the ionic liquid 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide and its mi...

2012
Narcisa Marangoci Rodinel Ardeleanu Laura Ursu Constanta Ibanescu Maricel Danu Mariana Pinteala Bogdan C Simionescu

An ionic liquid based on polydimethylsiloxane with imidazolium salt brushes was synthesized as a good solvent for β-cyclodextrin-polydimethylsiloxane rotaxane. As expected the PDMS-Im/Br ionic liquid had a liquid-like non-Newtonian behavior with rheological parameters dependent on frequency and temperature. The addition of rotaxane to the ionic liquid strengthened the non-Newtonian character of...

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