نتایج جستجو برای: acidic ionic liquids

تعداد نتایج: 93928  

2012
Catarina M. S. S. Neves Mara G. Freire João A. P. Coutinho

The number of applications involving ionic liquids has dramatically increased in the past few years, and their production and use in a large scale will inevitably lead to their dispersion into water streams (either by wastewater disposal or accidental leakage). Studies on the removal and recovery of ionic liquids from wastewater streams are therefore of crucial importance, yet particularly scar...

Journal: :The Journal of chemical physics 2005
Hideaki Shirota Alison M Funston James F Wishart Edward W Castner

We have investigated the ultrafast molecular dynamics of five pyrrolidinium cation room temperature ionic liquids using femtosecond optical heterodyne-detected Raman-induced Kerr effect spectroscopy. The ionic liquids studied are N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide P14+/NTf2-), N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide P1EOE+/NTf2-), N-et...

2007
Gwan-Hong Min Taeeun Yim Hyun Yeong Lee Hyo-Jin Kim Junyoung Mun Sangmi Kim Seung M. Oh Young Gyu Kim

1-Alkenyl-2,3-dimethylimidazolium tetrafluoroborate ionic liquids having an olefinic substituent were synthesized and characterized. Among them, [AMMIm]BF4 with an allyl group showed lower viscosity, higher ionic conductivity, and a wider electrochemical window compared with its analogue having a saturated alkyl substituent. An EDLC with [AMMIm]BF4 showed better performance than that with [PMMI...

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: :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...

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

مایعات یونی کاربردهای فراوانی در علم وتکنولوژی دارند. مزیت اصلی آنها که بعنوان حلال استفاده میشوند، فشار بخار پایین آنهاست و بهمین علت دوستدار محیط زیست هستند. مایعات یونی بعنوان حلال برای سنتز واکنشهای آلی، کاربردهای الکتروشیمیایی، آنتی اکسیدانت در روغن های روان کننده و در ابر خازنها کاربرد دارند. این خواص جالب با انتخاب کاتیون و آنیون مناسب بوجود می آید. از این رو بسیاری از خواص و کاربردهای آ...

Journal: :Molecules 2010
Fabio Bellina Cinzia Chiappe

As the interest for environmental increases and environmental laws become more stringent, the need to replace existing processes with new more sustainable technologies becomes a primary objective. The use of ionic liquids to replace organic solvents in metal catalyzed reactions has recently gained much attention and great progress has been accomplished in this area in the last years. This paper...

2017
Christian Schröder

In the last two decades, while searching for interesting applications of ionic liquids as potent solvents, their solvation properties and their general impact on biomolecules, and in particular on proteins, gained interest. It turned out that ionic liquids are excellent solvents for protein refolding and crystallization. Biomolecules showed increased solubilities and stabilities, both operation...

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