نتایج جستجو برای: room temperature ionic liquid

تعداد نتایج: 733410  

2015
P. Sippel P. Lunkenheimer S. Krohns E. Thoms A. Loidl

Ionic liquids (ILs) are salts that are liquid close to room temperature. Their possible applications are numerous, e.g., as solvents for green chemistry, in various electrochemical devices, and even for such "exotic" purposes as spinning-liquid mirrors for lunar telescopes. Here we concentrate on their use for new advancements in energy-storage and -conversion devices: Batteries, supercapacitor...

Succinimidinium hydrogensulfate ([H-Suc]HSO4), as a new and stable derivative of succinimide, is easily prepared by the reaction of succinimide with neat sulfuric acid. This ionic liquid can be used as an efficient catalyst for the acetylation of alcohols, phenols, thiols and amines at room temperature under mild and solvent free conditions. All the products are separated and identified using d...

Journal: :Sustainable Materials and Technologies 2023

Considering the renewability and chemical versatility of natural biopolymers, innovative solvation processes to efficiently disrupt native supramolecular structures (namely dissolve/gelate) polymers for their modification, derivation, materials fabrication are highly demanded. This work compares structural disorganization behavior at room temperature among waxy maize, high-amylose cassava potat...

Journal: :Physical chemistry chemical physics : PCCP 2016
Iuliia V Voroshylova Filipe Teixeira Renata Costa Carlos M Pereira M Natália D S Cordeiro

Gas-phase electronic and structural properties of the room temperature ionic liquid 1-ethyl-3-methylimidazolium tris(perfluoroethyl)trifluorophosphate ([EMIM][FAP]) were studied using density functional theory, and confirmed with results from infrared spectroscopy. A conformational analysis allowed the identification of several plausible conformers of the ion pairs. For the detected conformers,...

Journal: :Molecules 2011
Pedro Verdía Francisco Santamarta Emilia Tojo

The ionic liquid 1,3-dimethylimidazolium methyl sulfate, [MMIm][MSO₄], together with a small amount of water (the amount taken up by the ionic liquid upon exposure to air), acts efficiently as both solvent and catalyst of the Knoevenagel condensation reactions of malononitrile with 4-substituted benzaldehydes, without the need for any other solvent or promoter, affording yields of 92%-99% withi...

Journal: :Organic & biomolecular chemistry 2009
Hon Man Yau Andrew G Howe James M Hook Anna K Croft Jason B Harper

The effect on the rate of reaction of each of a series of Menschutkin processes on changing from a molecular solvent to an ionic liquid was investigated. In each case, the rate acceleration observed at room temperature could be attributed to the change in the entropy of the system on reaching the transition state, offsetting any enthalpic cost.

Journal: :Chemical communications 2009
Laura E Barrosse-Antle Richard G Compton

Gaseous CO(2) is almost irreversibly absorbed by the room temperature ionic liquid 1-butyl-3-methylimidazolium acetate ([C(4)mim][Ac]) in which it undergoes a chemically irreversible, one electron electrochemical reduction, suggesting a means for the sequestration of the greenhouse gas.

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