Ewa Bogel-Łukasik

• PhD. Msc. Eng.
• R&D Group Head at LAQV, REQUIMTE, New University of Lisbon

Carbon dioxide hydrogenation to methane is efficiently achieved using Ruthenium nanoparticles (Ru NPs) prepared and stabilized in task-specific ionic liquids. 1-Octyl-3-methylimidazolim perfluorobutanesulfonate [C8mim][NfO] is the best ionic liquid media producing 84% yield of methane at 150 °C. Other fluorinated anions based ionic liquids exhibite...

The transformation of carbon dioxide into gaseous or liquid fuels has been much studied as a potential means to store energy, especially renewable electrical energy produced during off-peak consumption periods. Electricity may be used directly, for the electrochemical reduction of CO 2 , or through electrolysis of water, generating hydrogen, which...

Host guest building block molecule, 9-thiabicyclo[3,3,1]nonane-2,6–dione, was synthesised in an advanced, “one-pot” hydrogenation process executed in a green solvent, supercritical carbon dioxide. Carbon capture and utilization with a combination of ionic liquid (1-butyl-3-methylimidazolium hydrogen sulfate) and heterogeneous commercially available...

The potential application of biomass and catalysts is crucial to form a bridge between the emerging bio-based industry and the current process technology. Using this approach to succinic acid, a biomass derived acid, might lead to new routes for derivative production, opening its transition to industrial scale. A considerable number of succinic aci...

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The evolution of technology is directed to reduce industrial waste from chemical processes to zero. In the past decade interest in ionic liquids (ILs) has grown, and they have been recognized as potential substitutes for volatile organic solvents used in certain chemical processes, including those in the pharmaceutical industry. Following this incr...

Subject of a sufficient valorisation of carbon dioxide into fuels is an attractive hot topic at academia and industry level. Transformation of carbon dioxide into fuels can suit as an excellent alternative to carbon dioxide capture and sequestration. As such an example we sought to achieve hydrogenation of carbon dioxide towards fuels, namely metha...

Carbon dioxide emissions from the use of fossil fuels are a leading cause of man-made climate change.

The efficient transformation of carbon dioxide into fuels can be an excellent alternative to sequestration. In this work, we describe CO2 hydrogenation to methane in imidazolium-based ionic liquid media, using ruthenium nanoparticles prepared in situ as catalyst. The best yield of methane (69 %) was achieved using 0.24 mol % ruthenium catalyst (in...

This work presents a sufficient cleaning of microfiltration membranes from industrial contaminants (oils) using supercritical fluids as alternative to industrial use of organic solvents used near their high boiling points. Supercritical carbon dioxide either as pure or with an insignificant addition of “greener” solvents such as ethyl alcohol or is...

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Lignocellulosic biomass composes a diversity of feedstock raw materials representing an abundant and renewable carbon source. In majority lignocellulose is constituted by carbohydrate macromolecules, namely cellulose and hemicellulose, and by lignin, a polyphenilpropanoid macromolecule. Between these biomacromolecules, there are several covalent an...

The mutual solubility of aniline and a series of imidazolium based ionic liquids with bis(trifluoromethylsulfonyl)amide, chloride, dicyanamide, tetrafluoroborate, and hexafluorophospate anions were studied. The produced results show the potential in the new solvent systems which can be used in amine chemistry. The liquid–liquid equilibrium (LLE) an...

The solubility of N-acetyl-L-cysteine, coumarin and 4-hydroxycoumarin in alternative solvents was studied in this work. The solid-liquid equilibrium (SLE) measurements have been performed using a dynamic (synthetic) method. Melting points and enthalpies of fusion of the pharmaceutical compounds were acquired using a differential scanning calorimetr...

Pretreatment of lignocellulosic biomass with ionic liquids (as) is a promising and challenging process for an alternative method of biomass processing. The present work emphasizes the examination of wheat straw pretreatment using ILs, namely, 1-butyl-3-methylimidazolium hydrogensulfate ([bmim][HSO4]), 1-butyl-3-methylimidazolium thiocyanate abmim][...

This work is devoted to study pre-treatment methodologies of wheat straw with 1-ethyl-3-methylimidazolium acetate ([emim][CH3COO]) and subsequent fractionation to cellulose, hemicellulose and lignin. The method developed and described here allows the separation into high purity carbohydrate and lignin fractions and permits an efficient IL recovery....

A high solubility of antituberculosis antibiotic drugs: isoniazid and pyrazinecarboxamide in ammonium ionic liquids shown in this work, demonstrates the promising perspectives in the drug processing. Solid-liquid equilibrium (SLE) measurements have been made using a dynamic (synthetic) method. Thermophyscial properties such as melting point, enthal...

The selective telomerisation of 2,3-dimethylbuta-1,3-diene with several different mono-and polyalcohols proceeds in the presence of a heterogeneous palladium catalyst. By applying a green solvent (CO2), the selectivity of the reaction as well as the conversion of diene is easily moderated, imitating the results of reactions with organic solvents. I...

The satisfactory mutual solubility of aniline and bis(trifluoromethylsulfonyl)amide or trifluoromethanesulfonate-based ionic liquids can open new perspectives in processing of phenylamine derivatives. Liquid-liquid equilibrium (LLE) and solid-liquid equilibrium (SLE) measurements were performed using a dynamic (synthetic) method. The solubility of...

The solubility of an antitubercular drug in alternative solvents can offer a potential application in pharmaceutical processing. Solid liquid equilibrium (SLE) measurements have been made using a dynamic (synthetic) method. The melting point, the enthalpy of fusion, temperature of the solid-solid phase transition, and corresponding enthalpy of pyra...

The sufficient solubility of isoniazid in alternative solvents obtained in this work can open new perspectives in pharmaceutical processing. Solid–liquid equilibrium (SLE) measurements have been made using a dynamic (synthetic) method. The melting point and the enthalpy of fusion of isoniazid were acquired using differential scanning calorimetry (D...

Fundamental data on 1,4-dioxaspiro[4.5]decane-2-methanol are scarce. This work presents the foremost systematic data on the solubility of 1,4-dioxaspiro[4.5]decane-2-methanol in sustainable solvents such as water and ionic liquids accompanied by the interpretation of interactions occurring in such binary systems. 1,4-Dioxaspiro[4.5]decane-2-methano...

Ionic liquids are innovative media characterised by an easy tunability of physical and chemical properties with the potential for broad usefulness in a wide spectrum of chemical applications. One example of such an application is a complex biorefinery concept leading to the exploitation of the biomass for the production of energy (heat, power, fuel...

Exploitation of neoteric solvents in the efficient total synthesis of carvacrol, an antimicrobial reagent, has been accomplished. The first reaction aimed supercritical mediated heterogeneous hydrogenation of carvone catalysed by palladium. The second step guided to an application of great salvation capacity of ionic liquids in separation of carvac...

The hydrogenation of carvone was investigated for the first time in high-density carbon dioxide. The hydrogenation over 0.5 wt% Pd, or Rh, or Ru supported on alumina was found to be generally faster in a single supercritical (sc) phase (fluid reagents) than in a biphasic system (liquid + fluid reactants). The reaction with Pd produced fully hydroge...

Ionic liquids are innovative media for applications, which offer large advantages over common chemicals, such a negligible vapor pressure, and thus, no air pollution potential, and comparative thermal stability. All these properties make them good solvents compared to the classical volatile chemicals and allow for their employment in reactions, ext...

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This work presents a foremost systematic study on the solubility of phenolic compounds (tannic acid, quercetin and gallic acid) in ionic liquids. A series of 1-butyl-3-methylimiazolium salts of hexafluorophosphate, tetrafluoroborate, trifluoromethanesulfonate and bis(trifluoromethylsulfonyl)amide derivatives were used in this research. The solid-li...

COVER ARTICLE Bogel-Łukasik et al. Phase equilibrium phenomena in solutions involving tannins, fl avonoids and ionic liquids

This work presents a systematic investigation into liquid-liquid phase equilibria for systems containing three various ionic liquids and four dienes as they have not been reported yet. The systems employed in this study containing dicyanamide based ionic liquids and dienes reveal the phase envelopes that have a similar shape to binodal curves with...

Lignocellulosic biomass is composed of cellulose, hemicellulose, and lignin. The compositions of these materials vary, and their structures are very complex. Biomass requires many hydrolytic technologies and biological as well as chemical pretreatments to be reduced in size and have its physical structure opened. The aqueous processes are favored f...

Solid–liquid, liquid–liquid and vapour–liquid equilibrium measurements for binary and ternary systems containing building blocks of biomass origin such as propionic acid, lactic acid and alternative solvents like carbon dioxide and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid have been carried out at 313.15 K. The bina...

Ionic liquids as coated catalysts or additives tremendously alter the selectivity pattern of the heterogeneous solid catalyst in the selective hydrogenation of limonene. The conventional monometallic ruthenium over alumina catalyst combined with an ionic liquid enables the one-pot synthesis of the intermediate p-menthene through limonene hydrogenat...

This paper presents the second part of work on the effect of hydrogen partial pressure on the hydrogenation of a terpene in a CO2-expanded liquid. The effect of hydrogen partial pressure on the hydrogenation of beta-myrcene possessing three C=C bonds catalysed by alumina-supported ruthenium and rhodium was studied. Experiments were performed at var...

Vapour–liquid equilibrium measurements for binary and ternary systems containing carbon dioxide, 1-propanol, and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ionic liquids are presented in this work. The binary...

In this work, liquid−liquid equilibria (LLE) of solutions of imidazolium-based ionic liquids—with either bistriflamide ([Cnmim][NTf2], n = 2 and n = 10) or triflate anions ([C2mim][OTf]), with 1-propanol, 1,2-propanediol, 1,3-propanediol, and glycerol (1,2,3-propanetriol)—were studied. The obtained phase diagrams show a remarkable difference in sol...

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

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A mechanism of limonene hydrogenation in high-pressure CO2 has been suggested using the experimental data. The experimental data on limonene hydrogenation in high-pressure CO2 were processed to elucidate the reaction mechanism and calculate the kinetic constants in rate equations for the proposed reaction scheme. The relationship between the total...

While carbohydrates serve as an abundant, diverse, and reusable source of carbon, their derivatization for industrial applications is still a challenging task because of the low solubility in solvents other than water. Ionic liquids are recognized as green solvents for carbohydrate processing. However, only a limited number of studies have been car...

Hydrogenation of monoterpenes, such as β-myrcene, in high-density carbon dioxide over 0.5 wt.% Pd, or Rh, or Ru supported on alumina was investigated. Hydrogenation catalysed by Rh and Ru is generally faster in a single supercritical (sc) phase (gaseous reagents and solid catalyst) than in a biphasic system (liquid + gas reactants + solid catalyst)...

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractThis paper discusses the development of catalytic (Pt, Pd) hydrogenation in high-pressure CO2 to convert limonene into valuable chemicals. It was noticed that varying the catalyst results in product regioselectivity. Platinum as catalyst favours the formation of p-menthane stereoisomers in equimolar quantities whereas palladium as catalyst...

Vapour–liquid equilibrium measurements for binary and ternary (carbon dioxide+β-myrcene and carbon dioxide+β-myrcene+hydrogen) systems have been carried out at 323.15K and pressures in the range from 7MPa to the critical pressure of the binary mixture and at pressures from 10 to 14MPa for the investigated ternary systems. Samples from the coexistin...

In this work the effect of the overall flow rate of the biphasic reaction mixture on hydrogenation distribution products is reported. As it was already presented by us, the reaction rate strongly correlates with the phase equilibrium existing in the system. On the other hand, carbon dioxide is nonreactive; nevertheless by its presence it changes th...

The hydrogenation of two liquid terpenes, alpha-pinene and limonene, was carried out in the presence of high-pressure carbon dioxide, using carbon-supported Pt catalysts. Phase equilibrium data on terpene + CO(2) + hydrogen were used to interpret the kinetics of hydrogenation in liquid + vapor systems close to the critical lines of the mixtures.

The effect of hydrogen partial pressure on the hydrogenation of limonene in high-pressure carbon dioxide, catalysed by carbon-supported palladium, was studied. Experiments were performed at various hydrogen pressures in the range from 2.5 up to 4.4 MPa at a fixed total pressure of 12.5 MPa, where the reaction mixture remains biphasic—liquid + gas....

Pressure-tuning of selectivity in the hydrogenation of limonene in carbon dioxide was found in biphasic systems, close but below the critical conditions of the reaction mixture, where hydrogen solubility in the liquid is highly dependent on pressure. The subtle effects of pressure on the two-phase region in CO2 + H-2 + a liquid reagent mixtures are...

The present invention relates to novel base stable ionic liquids and uses thereof as solvents in chemical reactions, especially base catalysed chemical reactions and reactions comprising the use of strong basis.

This work presents the ionic conductivity of 1-butyl-3-methylimidazolium chloride [bmim][Cl]'s solutions in alcohols (ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 2-butanol, 2-methyl-2-propanol) and that of pure alcohols measured in wide range of temperature and concentration. The values of limiting conductance were determined by the Onsage...

This paper reports the pH of binary systems containing 1-butyl-3-methylimidazolium chloride, [bmim][Cl], and alcohols [ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 2-butanol, 2-methyl-2-propanol (tert-butyl alcohol)] in a range of ionic liquid concentrations (c1) from 0.7 × 10−2 mol dm−3 to 3.51 × 10−2 mol dm−3 in the temperature range from...

The solubility of 1-butyl-3-methylimidazolium chloride [C4mim][Cl] in alcohols {ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 1-dodecanol, 2-butanol, 2-methyl-2-propanol (tert-butanol)} has been measured by a dynamic method from 270K to the melting point of the ionic liquid or to the boiling point of the solvent. The melting point, enthalpy...

This work presents the solid + liquid equilibria in binary systems consisting of 1-decyl-3-methylimidazolium chloride, [C(10)mim] [Cl], and alcohols [ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 1-dodecanol, 2-butanol, 2-methyl-2-propanol (tent-butyl alcohol)]. The measurements were carried out by using a dynamic method from 270 K to the me...

This work presents the solid + liquid equilibria in binary systems consisting of 1-decyl-3-methylimidazolium chloride, [C10mim][Cl], and alcohols [ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 1-dodecanol, 2-butanol, 2-methyl-2-propanol (tert-butyl alcohol)]. The measurements were carried out by using a dynamic method from 270 K to the melti...

The solubilities of 1-alkyl-3-methylimidazolium chloride, [C(n)mim][Cl], where n = 4, 8, 10, and 12, in 1-octanol and water have been measured by a dynamic method in the temperature range from 270 to 370 K. The solubility data was used to calculate the 1-octanol/ water partition coefficients as a function of temperature and alkyl substituent. The m...

The solid−liquid equilibrium (SLE) has been measured from 270 K to 445 K for 10 binary mixtures of benzimidazoles (benzimidazole and 2-methylbenzimidazole) with alcohols (1-propanol, 1-butanol, 2-butanol, 2-methyl-2-propanol, 1-hexanol) using a dynamic method. The melting point, enthalpy of fusion, and heat capacity change at the melting temperatur...

The solubility of 1-dodecyl-3-methylimidazolium chloride [C12mim][Cl] in alcohols {ethanol, 1-butanol, 1-hexanol, 1-octanol, 1-decanol, 1-dodecanol, 2-butanol, 2-methyl-2-propanol (tert-butyl alcohol)} has been measured by a dynamic method from 270 K to the melting point of the ionic liquid or to the boiling point of the solvent. The melting point,...