Weyhing-Zerrer N.,Merck KGaA |
Gundolf T.,Christian Doppler Laboratory |
Kalb R.,Proionic GmbH |
Ossmer R.,Merck KGaA |
And 3 more authors.
Ecotoxicology and Environmental Safety | Year: 2017
Ionic liquids (ILs), a new class of solvents with unique and tunable physicochemical properties, were initially envisioned as working alternatives to traditional organic solvents. However, they have now proven to have a wide range of alternative chemical and biochemical applications. Due to their increasing use, environmental and toxicity concerns are growing, but resolutions are hindered by the sheer number of possible variants. In order to assess and possibly predict IL-toxicity, a structure-activity relationship (SAR) approach was adopted using defined structural motifs. These included varied cationic alkyl side-chain lengths, cation lipophilicity and diverse anion effects. The predictive powers of such SARs in respect of antibacterial effects were compared using a total of 28 ILs on six Gram-negative and six Gram-positive pathogenic bacteria. Endpoints were minimum inhibitory (MIC) and minimum bactericidal concentrations (MBC). Results indicate that while certain limited IL-toxicity responses in bacteria can be predicted from SARs, they caution that predictions cannot be generalized across species. This study demonstrates the complex species-specific nature of IL-toxicity and the current limitations of SAR predictability. © 2017
Kambic M.,OLMA D.d. |
Kalb R.,Proionic GmbH |
Tasner T.,HAWE Hidravlika D.o.o. |
Lovrec D.,University of Maribor
The Scientific World Journal | Year: 2014
Over recent years ionic liquids have gained in importance, causing a growing number of scientists and engineers to investigate possible applications for these liquids because of their unique physical and chemical properties. Their outstanding advantages such as nonflammable liquid within a broad liquid range, high thermal, mechanical, and chemical stabilities, low solubility for gases, attractive tribological properties (lubrication), and very low compressibility, and so forth, make them more interesting for applications in mechanical engineering, offering great potential for new innovative processes, and also as a novel hydraulic fluid. This paper focuses on the outstanding compressibility properties of ionic liquid EMIM-EtSO4, a very important physical chemically property when IL is used as a hydraulic fluid. This very low compressibility (respectively, very high Bulk modulus), compared to the classical hydraulic mineral oils or the non-flammable HFDU type of hydraulic fluids, opens up new possibilities regarding its usage within hydraulic systems with increased dynamics, respectively, systems' dynamic responses. © 2014 Milan Kambic et al.
PubMed | OLMA d.d., Proionic GmbH, University of Maribor and HAWE Hidravlika d.o.o.
Type: | Journal: TheScientificWorldJournal | Year: 2014
Over recent years ionic liquids have gained in importance, causing a growing number of scientists and engineers to investigate possible applications for these liquids because of their unique physical and chemical properties. Their outstanding advantages such as nonflammable liquid within a broad liquid range, high thermal, mechanical, and chemical stabilities, low solubility for gases, attractive tribological properties (lubrication), and very low compressibility, and so forth, make them more interesting for applications in mechanical engineering, offering great potential for new innovative processes, and also as a novel hydraulic fluid. This paper focuses on the outstanding compressibility properties of ionic liquid EMIM-EtSO4, a very important physical chemically property when IL is used as a hydraulic fluid. This very low compressibility (respectively, very high Bulk modulus), compared to the classical hydraulic mineral oils or the non-flammable HFDU type of hydraulic fluids, opens up new possibilities regarding its usage within hydraulic systems with increased dynamics, respectively, systems dynamic responses.
Verevkin S.P.,University of Rostock |
Zaitsau D.H.,University of Rostock |
Emel'Yanenko V.N.,University of Rostock |
Yermalayeu A.V.,University of Rostock |
And 6 more authors.
Journal of Physical Chemistry B | Year: 2013
Vaporization enthalpy of an ionic liquid (IL) is a key physical property for applications of ILs as thermofluids and also is useful in developing liquid state theories and validating intermolecular potential functions used in molecular modeling of these liquids. Compilation of the data for a homologous series of 1-alkyl-3-methylimidazolium bis(trifluoromethane-sulfonyl)imide ([Cnmim][NTf2]) ILs has revealed an embarrassing disarray of literature results. New experimental data, based on the concurring results from quartz crystal microbalance, thermogravimetric analyses, and molecular dynamics simulation have revealed a clear linear dependence of IL vaporization enthalpies on the chain length of the alkyl group on the cation. Ambiguity of the procedure for extrapolation of vaporization enthalpies to the reference temperature 298 K was found to be a major source of the discrepancies among previous data sets. Two simple methods for temperature adjustment of vaporization enthalpies have been suggested. Resulting vaporization enthalpies obey group additivity, although the values of the additivity parameters for ILs are different from those for molecular compounds. © 2013 American Chemical Society.
News Article | December 5, 2016
The global ionic liquids market size is predicted to cross 50 kilo tons by end of the forecasted period growing at CAGR of more than 22%. Features like low viscosity, high thermal stability, high conductivity and minimal vapour pressure of ionic liquids have propelled the demand & growth of global ionic liquids market. An ion or cat ion choice in the synthesis of ionic liquids greatly affects their physical features like viscosity, conduction, density and polarity. Technological breakthroughs in the product development for niche applications in aerospace industry and pharmaceuticals sector is predicted to offer future growth avenues for the global ionic liquids market. Based on the product, the global ionic liquids market is bifurcated into piperidinium, ammonium, pyridinium, imidazolium, sulphonium, phosphonium and morpholinium. Based on the application, the global ionic liquids market is divided into plastics, solvents & catalysts, food, bio refineries, process & operating fluids and batteries & electronics. Solvents & catalysts section led the global ionic liquids market in 2014 as they could act both as solvent as well as co catalyst. These solvents & catalysts can react chemically with precursor of catalyst and form active catalyst complex. Request for a sample of this research report @ https://www.fractovia.org/request-sample/116 Food applications section is predicted to grow rapidly during the forecasted period. Consumer choice towards processed foods due to busy lifestyle and rise in purchasing power of consumers are the factors predicted to stimulate the growth & demand for ionic liquids for the section. Batteries & electronics section is predicted to experience normal gains during the forecasted period. Ionic liquids are used as electrolytic tool in the batteries and technological innovations are made in the batteries & electronics for including these ionic liquids in the batteries & electronics. Depending upon the geographical locations, the global ionic liquids market is bifurcated into North American subcontinent, APAC zone, European continent and rest of the world. The North American continent dominated the global ionic liquids market in 2014. USA contributed maximum market share during this year in terms of revenue. Strict government rules over the use of organic solvents in end use sectors like oil & gas sector, chemical sector and pharmaceuticals sector due to health & environmental concerns are predicted to promote the demand and growth of the ionic liquids industry in USA. This in turn has also resulted in demand & growth of the ionic liquids market of North America. The ionic liquids market of APAC zone is also predicted to grow rapidly during the forecasted period. The ionic liquids market in China contributed maximum market share in 2014. Change in focus towards acceptance of green solvents due to ecological concerns from organic equivalents is predicted to stimulate the demand of ionic liquids in China. It has many large-scale industries and is the key production hub of APAC zone. All this has contributed to grow of ionic liquids industry in APAC zone. Key industry players involved in the ionic liquids business and contributing towards the growth of the global ionic liquids market are as follows: • BASF SE • Solvionic SA • Solaronix • Wuhu Huaren Science and technology company limited • IOLITEC GmbH • Strem Chemicals • TCI • Coorstek Specialty Chemicals • Scionix • Reinste Nanoventure • Evonik Industries AG • Sooyangchemtec Company Limited • Santa Cruz Biotechnology • Merck KGAA • Proionic • Strem Chemicals Incorporation • The Chemours Company • Ionic Liquids Technologies GmbH • Jinkai Chemical Company Limited • Tatva Chintan Pharma Chem Private Limited • Solvay S.A. Fractovia.org is one of India's leading in-house and free news portal. It is fully automated, and operates on a constant premise, interfacing with news sites and offering redesigned breaking features to readers across the globe. Our mission is to offer individuals opportunities for connections with news writers and distributors which they can pursue. We operate by mapping articles pertaining to breaking news, constantly and progressively, against a pre-determined word-based theme, offering important connections to readers and clients, as well as distributers.
Janiczek P.,Proionic GmbH |
Janiczek P.,OMV Austria Exploration and Production GmbH |
Kalb R.S.,Proionic GmbH |
Thonhauser G.,MU Leoben |
Gamse T.,Institute of Chemical Technology
Separation and Purification Technology | Year: 2012
In order to decrease the carbon dioxide (CO 2) content of gas streams to reach environmental or sales gas requirements, a series of different techniques have been established over the years. For example, in natural gas processing, aqueous amine solutions are commonly used as a washing media. A category of new fluids, ionic liquids (ILs), shows certain advantages compared to standard technologies, like non-volatile character and the absence of aqueous solutions. A great amount of research into CO 2 solubility in ILs in general has been performed over the last years, fewer in high pressure solubility. Nearly none have reached a state beyond laboratory scale. This paper presents the final experiments from a feasibility study, namely high pressure absorption of CO 2 from an inert component and the respective desorption by using columns at technical scale. The used IL is non-toxic, stable to hydrolysis and can practicably and reasonably be produced industrially with a novel high quality synthesis route. Measuring the pressure equilibrium data at different temperatures and generation of the corresponding diagrams was the basis for the column experiments. A fundamental point was to identify which phase flows disperse together with the consequent impact on the process. The investigation of the recycling behavior, as a sequence of absorption and desorption cycles, was a very important part of the project. Hence, it was possible to improve the balance point and the load line. The results promise the application of the novel process on an industrial scale soon. © 2012 Elsevier B.V. All rights reserved.
PubMed | Proionic GmbH, University of Rostock and Kazan Federal University
Type: Journal Article | Journal: Physical chemistry chemical physics : PCCP | Year: 2016
Within the last decade the Carbonate Based Ionic liquid Synthesis (CBILS) has developed towards a widely applicable, greener and halogen free process for the industrial production of ionic liquids. A large number of diverse starting materials have been screened experimentally, to explore the structural limits of the core reaction step, which is the quaternization of nitrogen, phosphor or sulfur based nucleophiles with carbonic acid dialkyl or diaryl esters to the corresponding quaternary alkyl- or arylcarbonates. In order to overcome the large experimental effort of empirical screening, a practical method based on quantum-chemical calculation has been developed for an assessment of feasibility of chemical reactions. This method has been successfully tested with 16 typical CBILS reactions by calculation of their thermodynamic functions. Thermodynamic equilibrium constants as a measure for the practical yield of the CBILS reactions at 298 K and 393 K have been determined for both the gaseous state and the liquid state. The method has been evaluated by comparison of the theoretical results with experimental data and it can be considered as the powerful tool to reduce trial and failure for the industrial application of the CBILS process.