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Preface to the Maria Eugénia Macedo Special Issue

2024; American Chemical Society; Volume: 69; Issue: 10 Linguagem: Inglês

10.1021/acs.jced.4c00479

1520-5134

Luísa A. Ferreira, Oscar Rodrı́guez, Catinca Secuianu, Marcelo S. Zabaloy,

Maternal and Neonatal Healthcare

InfoMetricsFiguresRef. Journal of Chemical & Engineering DataVol 69/Issue 10Article This publication is free to access through this site. Learn More CiteCitationCitation and abstractCitation and referencesMore citation options ShareShare onFacebookX (Twitter)WeChatLinkedInRedditEmailJump toExpandCollapse EditorialOctober 10, 2024Preface to the Maria Eugénia Macedo Special IssueClick to copy article linkArticle link copied!Luisa Alexandre FerreiraLuisa Alexandre FerreiraMore by Luisa Alexandre FerreiraOscar RodriguezOscar RodriguezMore by Oscar Rodriguezhttps://orcid.org/0000-0002-8416-8534Catinca SecuianuCatinca SecuianuMore by Catinca Secuianuhttps://orcid.org/0000-0001-5779-6415Marcelo S. ZabaloyMarcelo S. ZabaloyMore by Marcelo S. Zabaloyhttps://orcid.org/0000-0002-8183-9523Open PDFJournal of Chemical & Engineering DataCite this: J. Chem. Eng. Data 2024, 69, 10, 3241–3243Click to copy citationCitation copied!https://pubs.acs.org/doi/10.1021/acs.jced.4c00479https://doi.org/10.1021/acs.jced.4c00479Published October 10, 2024 Publication History Received 26 August 2024Published online 10 October 2024Published in issue 10 October 2024editorialCopyright © Published 2024 by American Chemical Society. This publication is available under these Terms of Use. Request reuse permissionsThis publication is licensed for personal use by The American Chemical Society. ACS PublicationsCopyright © Published 2024 by American Chemical SocietySubjectswhat are subjectsArticle subjects are automatically applied from the ACS Subject Taxonomy and describe the scientific concepts and themes of the article.Chemical engineering and industrial chemistryPhase equilibriaReaction engineeringSolventsThermodynamicsSPECIAL ISSUEThis article is part of the In Honor of Maria Eugenia Macedo special issue.We are thrilled to unveil this special issue of Journal of Chemical & Engineering Data (JCED) honoring the 40 years of the doctoral degree of Professor Maria Eugénia Macedo. It is a great opportunity to celebrate her outstanding career of vital contributions to the development of Applied Thermodynamics, bringing together a substantial portion of those who have collaborated with her.BiographyClick to copy section linkSection link copied!Maria Eugénia Rebello de Almeida Macedo was born in Leiria (Portugal) and is one of the most well-known Portuguese scientists in Thermodynamics. After having completed her bachelor's degree in 1978 at the Faculty of Engineering of the University of Porto (FEUP, Porto, Portugal), she started preparing her doctoral degree at the Technical University of Denmark (DTU, Kongens Lyngby, Denmark). During her stay at the IVC-SEP research group, she mostly worked with phase equilibria determinations and modeling with Professor Peter Rasmussen.This period of intense research and networking was essential to the defense of her Ph.D. at FEUP in 1984, with her thesis topic being "Experimental determination, correlation and prediction of phase equilibria". She keeps fond memories of her time at DTU, especially of all the people she met there, particularly her office mates Karel Aim and the late Maurizio Fermeglia.After obtaining her doctoral degree, she became an Assistant Professor at FEUP and joined the Laboratory of Separation & Reaction Engineering (where she has led the research on Applied Thermodynamics ever since), while maintaining frequent research stays at DTU. In 1987, a significant part of her thesis was published in the well-known DECHEMA Chemistry Data Series (Volume V, Part 4), attesting the high-quality and importance of the obtained results. Further, in 1999, already as Associate Professor, she gained her habilitation in the field of "Thermodynamics of Electrolyte Solutions".Contributions to Science and EngineeringClick to copy section linkSection link copied!So far, Maria Eugénia has published more than 230 scientific papers, with an H-index of 52. Most of her research is focused on phase equilibria and electrolytes, at both experimental and theoretical levels.Concerning phase equilibria, her works span over solid–liquid equilibria involving biomolecules such as sugars, amino acids and proteins, (1−3) and pharmaceuticals, (4,5) liquid–liquid equilibria (especially aqueous two-phase systems (6−8)), vapor–liquid equilibria (e.g., vapor pressure osmometry (9−11)), and supercritical fluids. More recently, her research has been shifting increasingly toward green novel solvents such as ionic liquids (ILs), (12−14) with significant contributions on the application and thermophysical characterization of choline-amino acid ionic liquids (CAAILs). (15−18)Regarding electrolytes, she has worked with several excess Gibbs energy models and equations of state to enhance the description of electrolyte-containing systems and has developed noteworthy modifications for these models. (19−21) Even though less numerous, Maria Eugénia has also contributed with works in molecular dynamics (22−24) and computational chemistry, (25) mostly to help in model parametrization. The Liu–Silva–Macedo equation (for self-diffusion coefficients), (26) the Tracer–Liu–Silva–Macedo model (for diffusion coefficients at infinite dilution), (21) a modified Wilson equation, (27) and the Porto approach for the calculation of non-randomness factors (25) can be highlighted among her most well-known innovations.Students and Research AssociatesClick to copy section linkSection link copied!Maria Eugénia has created countless opportunities, enriching the lives of many. So far, she has supervised more than 30 B.Sc., 30 M.Sc., and 22 Ph.D. theses, along with 25 postdoctoral researchers. Besides scientific research, Maria Eugénia has dedicated a significant part of her life to teaching activities, being responsible, for more than 20 years, for all the courses on Thermodynamics in the Chemical Engineering curriculum at FEUP.Active CollaborationsClick to copy section linkSection link copied!Maria Eugénia hosted and supervised several research stays at her group, mainly from the Technical University of Dortmund (Germany), University of Vigo (Spain), Universidad Nacional del Sur (Argentina), Aix-Marseille University (France), and Federal University of Rio de Janeiro (Brazil). Other collaborations include, for instance, those with the NOVA University Lisbon (Portugal), University of Alicante (Spain), Heriot-Watt University (Scotland), University de Pau et des Pays de l'Adour (France), University of Santiago de Compostela (Spain), Imperial College (United Kingdom), Rural Federal University of Rio de Janeiro (Brazil), Technical University of Delft (Netherlands), and, as previously mentioned, the Technical University of Denmark (Denmark). Nevertheless, she has extended her network beyond academia, being involved in many projects with industry (e.g., Bial (Portugal), Elf Aquitaine (France), SEPAREX (France), AEA Technology (United Kingdom), and IFP-EN (France)).Societies and OrganizationsClick to copy section linkSection link copied!Maria Eugénia is a founding member of the Working Party on Thermodynamics and Transport Properties (WPTTP) of the European Federation of Chemical Engineering (EFCE). She is a former member of the editorial boards of Fluid Phase Equilibria (Elsevier) and Journal of Chemical & Engineering Data (American Chemical Society, ACS) and has been a guest editor of several special issues.Since 2011, she is the chair of the International Steering Committee of the European Symposium of Applied Thermodynamics (ESAT), which is the oldest and most prestigious European annual conference on Thermodynamics.Maria Eugénia is also a member of the International Scientific Committees of the Iberoamerican Conference on Phase Equilibria and Fluid Properties for Process Design (EQUIFASE) and of the International Conference on Properties and Phase Equilibria for Product and Process Design (PPEPPD). In particular, she was the chair of ESAT 1999 (Vilamoura, Portugal), EQUIFASE 2009 (Praia da Rocha, Portugal), and PPEPPD 2016 (Porto, Portugal) and will be retaking this role for the upcoming edition of ESAT in 2026 (Caparica, Portugal). Furthermore, she was also deeply involved in the organization of ESAT 1988 (Ofir, Portugal) and the International Chemical and Biological Engineering Conference (CHEMPOR) 1993 (Porto, Portugal).Closing RemarksClick to copy section linkSection link copied!The relentless dedication of Professor Maria Eugénia Macedo to Thermodynamics has left an indelible mark on the scientific community. Through her extensive research and exemplary teaching and service, she has inspired countless students, scientists, and engineers, building a permanent legacy. We hope this legacy will continue to grow in the future years, since she is still very active in the applied thermodynamics community.We would like to extend our special thanks to all contributors of this special issue.Author InformationClick to copy section linkSection link copied!Corresponding AuthorCatinca Secuianu, https://orcid.org/0000-0001-5779-6415AuthorsLuisa Alexandre FerreiraOscar Rodriguez, https://orcid.org/0000-0002-8416-8534Marcelo S. Zabaloy, https://orcid.org/0000-0002-8183-9523NotesViews expressed in this editorial are those of the authors and not necessarily the views of the ACS.ReferencesClick to copy section linkSection link copied! This article references 27 other publications. 1Carneiro, A. P.; Rodríguez, O.; Macedo, E. A. Solubility of monosaccharides in ionic liquids–Experimental data and modeling. Fluid Phase Equilib. 2012, 314, 22– 28, DOI: 10.1016/j.fluid.2011.10.011 Google Scholar1Solubility of monosaccharides in ionic liquids - Experimental data and modelingCarneiro, Aristides P.; Rodriguez, Oscar; Macedo, Eugenia A.Fluid Phase Equilibria (2012), 314 (), 22-28CODEN: FPEQDT; ISSN:0378-3812. (Elsevier B.V.) Biomass represents nowadays one of the more sustainable alternatives as a source of fuels and chems. The capability of ionic liqs. to act as selective solvents and catalysts for biomass processing has already been proven. Thus they are a serious alternative to conventional solvents, provided that phase equil. with biomass derived compds. is studied. To overcome the lack of exptl. data on phase equil. of biomass carbohydrates in ionic liqs., the solubilities of monosaccharides such as D-(+)-Glucose, D-(-)-Fructose, D-(+)-Xylose and D-(+)-Galactose in two ILs were measured in a temp. range from 288 K to 328 K. The ionic liqs. selected for this work were the 1-etyhl-3-methylimidazolium ethylsulfate, [emim][EtSO4], and the Aliquat336. The exptl. technique used a combination of an isothermal method to attain the solid-liq. equil., and quant. anal. by HPLC with refractive index detector. For the two ionic liqs., the ranking of soly. follows the series: D-(-)-Fructose > D-(+)-Xylose > D-(+)-Glucose > D-(+)-Galactose. The correlation of the soly. data was achieved through local compn. thermodn. models NRTL and UNIQUAC. For both models the av. relative deviations are almost all below 4%, which is a satisfactory result. The apparent std. thermodn. functions of dissoln. were also detd. from the exptl. data using an approach based on a modified Van't Hoff equation. The results show good accuracy. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BC3MXhs1ejsLfI&md5=502ea703de3142a29c18509eca65aa052Wysoczanska, K.; Macedo, E. A.; Sadowski, G.; Held, C. Solubility Enhancement of Vitamins in Water in the Presence of Covitamins: Measurements and ePC-SAFT Predictions. Ind. Eng. Chem. Res. 2019, 58, 21761– 21771, DOI: 10.1021/acs.iecr.9b04302 Google Scholar2Solubility Enhancement of Vitamins in Water in the Presence of Covitamins: Measurements and ePC-SAFT PredictionsWysoczanska, Kamila; Macedo, Eugenia A.; Sadowski, Gabriele; Held, ChristophIndustrial & Engineering Chemistry Research (2019), 58 (47), 21761-21771CODEN: IECRED; ISSN:0888-5885. (American Chemical Society) Scarce knowledge on the behavior of vitamins in aq. solns. in the presence of additives is often a limiting factor for industrial applications such as process design and optimization. Knowing the pH-soly. profiles of vitamins is fundamental for understanding and controlling their behavior in aq. solns. In the present work, pH-dependent solubilities of the vitamins ascorbic acid (VC), riboflavin (VB2), nicotinic acid (VB3acid), folic acid (VB9), and cyanocobalamin (VB12) were measured at T = 298.15 K and p = 1 bar. These results were compared with the pH-soly. profiles obtained with modified Henderson-Hasselbalch equations using pKa values from the literature. Further, the solubilities of poorly sol. VB2, VB9, and VB12 were increased by the addn. of covitamins VC, VB3acid, and nicotinamide (VB3amide). As obsd., VB3amide increases the vitamin soly. much stronger than VC and VB3acid. These covitamins are called "hydrotropes" in several works of literature, and they increase the soly. of other vitamins by manipulating the pH of the satd. solns. and by mol. cross interactions. The interplay between both, pH and cross interactions depends strongly on the kind and concn. of covitamin. At low concns., VC and VB3amide (< 0.2 m) increased soly. by pH change. At higher concns. of VC and VB3amide added, mainly cross interactions between vitamin and covitamin det. the strength of soly. increase. To sep. these effects and to further reduce exptl. effort, electrolyte PC-SAFT (ePC-SAFT) was used to predict vitamin soly. The pH-soly. profiles and the solubilities of vitamins in water at T = 298.15 K and p = 1 bar upon addn. of covitamins were predicted with reasonable accuracy. This success resulted from accounting for different charged and neutral vitamin species according to the pH and from considering explicitly the interactions vitamin-water and vitamin-covitamin. It could be shown that "hydrotropic solubilization" of a vitamin is the increase of vitamin soly. caused by pH shift and by cross interactions between the satd. species of a vitamin and the added covitamin. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BC1MXhvF2msbzM&md5=e38b6126c6fbdbbe66905f93874313be3Ferreira, L. A.; Pinho, S. P.; Macedo, E. A. Solubility of l-serine, l-threonine and l-isoleucine in aqueous aliphatic alcohol solutions. Fluid Phase Equilib. 2008, 270, 1– 9, DOI: 10.1016/j.fluid.2008.05.008 Google Scholar3Solubility of L-serine, L-threonine and L-isoleucine in aqueous aliphatic alcohol solutionsFerreira, Luisa A.; Pinho, Simao P.; Macedo, Eugenia A.Fluid Phase Equilibria (2008), 270 (1-2), 1-9CODEN: FPEQDT; ISSN:0378-3812. (Elsevier B.V.) The solubilities of L-serine, L-threonine and L-isoleucine in the aq. systems of ethanol, 1-propanol and 2-propanol were measured at 298.15, 313.15 and 333.15 K by means of gravimetric and spectrophotometric ninhydrin based method measurements. In order to represent the solid-liq. equil. in those systems the excess soly. approach was combined with the NRTL, the modified NRTL, the modified UNIQUAC equations and also with the model presented by Gude, M.T. et al. (1996). Their correlation performance showed global av. relative deviations of 15.3, 13.7, 13.4 and 15.8 %, resp., while their application in the prediction of L-threonine soly. in water/ethanol mixed solvent mixts., at two different temps., showed av. relative deviations of 18.8, 9.1, 28.9, and 38.4 %, resp. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BD1cXhtVaisrzL&md5=8a74da88bc9d5d0a941e747613d1be3f4Mota, F. L.; Queimada, A. J.; Pinho, S. P.; Macedo, E. A. Solubility of drug-like molecules in pure organic solvents with the CPA EoS. Fluid Phase Equilib. 2011, 303, 62– 70, DOI: 10.1016/j.fluid.2011.01.014 Google Scholar4Solubility of drug-like molecules in pure organic solvents with the CPA EoSMota, Fatima L.; Queimada, Antonio J.; Pinho, Simao P.; Macedo, Eugenia A.Fluid Phase Equilibria (2011), 303 (1), 62-70CODEN: FPEQDT; ISSN:0378-3812. (Elsevier B.V.) Soly. data in different solvents are an important issue for sepn. processes involving complex mols. such as natural products and pharmaceutical drugs. Nonetheless, soly. data are in general scarce and difficult to obtain, and so models are important tools to generate the necessary ests. Different correlative, statistical and thermodn. models have been proposed to evaluate solubilities. From these, the more theor. sound thermodn. models allow to generate ests. at broader temp., pressure and compn. conditions while using a smaller amt. of exptl. information. Among these, the cubic-plus-assocn. equation of state that combines the simplicity and robustness of a cubic equation of state with the Wertheim's assocn. contribution has been under attention. In this work, this EoS is for the first time proposed to model org. phase solubilities of drug-like mols. in a wide range of temps. Solubilities of acetanilide, acetylsalicylic acid, adipic acid, ascorbic acid, hydroquinone, ibuprofen, paracetamol and stearic acid were estd. in alcs., ketones, alkanes, esters, acids, aroms., chlorinated solvents, as well as in other common solvents. The hydrogen bonding behavior was explicitly accounted for with each assocg. group being treated individually, as well as multiple group substitutions. Accurate correlations were obtained using a single binary interaction parameter (global AAD of 24.2%), while considering the complexity of the studied systems predictions were generally also satisfactory. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BC3MXisVKqurw%253D&md5=21b27e39be4b7b8e53f1f6d2a7bd12e65Mota, F. L.; Carneiro, A. P.; Queimada, A. J.; Pinho, S. P.; Macedo, E. A. Temperature and solvent effects in the solubility of some pharmaceutical compounds: Measurements and modeling. Eur. J. Pharm. Sci. 2009, 37, 499– 507, DOI: 10.1016/j.ejps.2009.04.009 Google Scholar5Temperature and solvent effects in the solubility of some pharmaceutical compounds: Measurements and modelingMota, Fatima L.; Carneiro, Aristides P.; Queimada, Antonio J.; Pinho, Simao P.; Macedo, Eugenia A.European Journal of Pharmaceutical Sciences (2009), 37 (3-4), 499-507CODEN: EPSCED; ISSN:0928-0987. (Elsevier B.V.) In this work, pure solvent solubilities of drugs, such as paracetamol, allopurinol, furosemide and budesonide, measured in the temp. range between 298.2-315.2 K are presented. The solvents under study were water, ethanol, acetone, Et acetate, carbon tetrachloride and n-hexane. Measurements were performed using the shake-flask method for generating the satd. solns. followed by compositional anal. by HPLC. Previous literature values on the solubilities of paracetamol were used to assess the exptl. methodol. employed in this work. No literature data was found for any of the other drugs studied in this assay. Melting properties of the pure drugs were also detd. by differential scanning calorimetry (DSC) to provide a broader knowledge about the solubilization process and also for modeling purposes. The soly. data as a function of temp. were used to det. the thermodn. properties of dissoln. like, Gibbs energy, enthalpy and entropy. Theor. work was essentially focused on the evaluation of the Nonrandom Two-Liq. Segment Activity Coeff. (NRTL-SAC) model, which was referred as a simple and practical thermodn. framework for drug soly. estn. A satisfactory agreement was found between exptl. and calcd. values: the abs. av. deviation was 68% for the correlation in the org. solvents and 38% for the prediction in water, where the best results in prediction could be related to the selected solvents. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BD1MXms1Oktr8%253D&md5=86bd46a91ac3c11197b7cfe3a47152606Velho, P.; Madaleno, A.; Macedo, E. A. Liquid–Liquid Equilibria Determination and Modeling of ATPS Based on PEG4000 and PVP29000 at 298.15 K and 0.1 MPa. J. Chem. Eng. Data 2024, 69, 2585– 2595, DOI: 10.1021/acs.jced.4c00055 Google ScholarThere is no corresponding record for this reference.7Silvério, S. C.; Gracia, J.; Teixeira, J. A.; Macedo, E. A. Polyethylene glycol 8000+ citrate salts aqueous two-phase systems: Relative hydrophobicity of the equilibrium phases. Fluid Phase Equilib. 2016, 407, 298– 303, DOI: 10.1016/j.fluid.2015.07.027 Google Scholar7Polyethylene glycol 8000+ citrate salts aqueous two-phase systems: Relative hydrophobicity of the equilibrium phasesSilverio, Sara C.; Gracia, Jesus; Teixeira, Jose A.; Macedo, Eugenia A.Fluid Phase Equilibria (2016), 407 (), 298-303CODEN: FPEQDT; ISSN:0378-3812. (Elsevier B.V.) The Gibbs free energy of transfer of a methylene group, ΔG*(CH2), is reported as a measure of the relative hydrophobicity of the equil. phases. Furthermore, ΔG*(CH2) is a characteristic parameter of each tie-line, and for that reason can be used for comparing different tie-lines of a given aq. two-phase system (ATPS) or even to establish comparisons among different ATPSs. In this work, the partition coeffs. of a series of four dinitrophenylated-amino acids were exptl. detd., at 23 °C, in five different tie-lines of PEG8000-(sodium or potassium) citrate ATPSs. ΔG*(CH2) values were calcd. from the partition coeffs. and used to evaluate the relative hydrophobicity of the equil. phases. PEG8000-potassium citrate ATPSs presented larger relative hydrophobicity than PEG8000-sodium citrate ATPSs. Furthermore, the results obtained indicated that the PEG-rich phase (top phase) has higher affinity to participate in hydrophobic hydration interactions than the salt-rich phase (bottom phase). >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BC2MXht12rtrfF&md5=8bff1d5ea6c522c5cbcd94f41b57d9908Rebelo, C. S.; Velho, P.; Macedo, E. A. eNRTL modelling and partition of phenolics in the ATPSs {ethyl lactate (1) + potassium sodium tartrate or disodium succinate (2) + water (3)} at 298.2 K and 0.1 MPa. Fluid Phase Equilib. 2024, 582, 114087, DOI: 10.1016/j.fluid.2024.114087 Google ScholarThere is no corresponding record for this reference.9Velho, P.; Sousa, E.; Macedo, E. A. Measurement and modelling of liquid density (298.15 and 313.15 K) and vapour pressure osmometry (313.15 K) for binary aqueous solutions of organic salts. J. Chem. Thermodyn. 2024, 194, 107287, DOI: 10.1016/j.jct.2024.107287 Google ScholarThere is no corresponding record for this reference.10Wysoczanska, K.; Calvar, N.; Macedo, E. A. Vapor + liquid) equilibria of alcohol + 1-methyl-1-propylpiperidinium triflate ionic liquid: VPO measurements and modeling. J. Chem. Thermodyn. 2016, 97, 183– 190, DOI: 10.1016/j.jct.2016.01.026 Google ScholarThere is no corresponding record for this reference.11Calvar, N.; Domínguez, Á.; Macedo, E. A. Activity and Osmotic Coefficients of Binary Mixtures of NTf2– Ionic Liquids with a Primary Alcohol. J. Chem. Eng. Data 2016, 61, 4123– 4130, DOI: 10.1021/acs.jced.6b00556 Google ScholarThere is no corresponding record for this reference.12Gómez, E.; Domínguez, I.; Domínguez, Á.; Macedo, E. A. Ionic Liquids-Based Aqueous Biphasic Systems with Citrate Biodegradable Salts. J. Chem. Eng. Data 2018, 63, 1103– 1108, DOI: 10.1021/acs.jced.7b00849 Google Scholar12Ionic Liquids-Based Aqueous Biphasic Systems with Citrate Biodegradable SaltsGomez, Elena; Dominguez, Irene; Dominguez, Angeles; Macedo, Eugenia A.Journal of Chemical & Engineering Data (2018), 63 (4), 1103-1108CODEN: JCEAAX; ISSN:0021-9568. (American Chemical Society) New ionic liqs.-aq. biphasic systems (ABS) contg. the imidazolium and pyrrolidinium cation combined with dicyanamide anion and citrate org. salts are investigated. Several ionic liqs. (five in total) were evaluated toward their capacity to create aq. biphasic systems in the presence of two low environmental impact org. salts: potassium and sodium citrate. The capacity of these ILs to form two liq. phases is discussed regarding the alkyl chain length and the cation core of the IL. Besides, the effect of the citrate salt on the phase behavior has been also addressed. To study the capacity of the ABS the binodal curves were detd. at T = 298.15 K and atm. pressure. Finally, a comparison between the exptl. results obtained here and the literature values was carried out. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BC1cXlslOqsr4%253D&md5=e13524d84bcb4439d54c7c1c5fadcdba13Gonzalez, B.; Calvar, N.; Gomez, E.; Macedo, E. A.; Dominguez, A. Synthesis and Physical Properties of 1-Ethyl 3-methylpyridinium Ethylsulfate and Its Binary Mixtures with Ethanol and Water at Several Temperatures. J. Chem. Eng. Data 2008, 53, 1824– 1828, DOI: 10.1021/je800159w Google Scholar13Synthesis and physical properties of 1-ethyl 3-methylpyridinium ethylsulfate and its binary mixtures with ethanol and water at several temperaturesGonzalez, Begona; Calvar, Noelia; Gomez, Elena; Macedo, Eugenia A.; Dominguez, AngelesJournal of Chemical & Engineering Data (2008), 53 (8), 1824-1828CODEN: JCEAAX; ISSN:0021-9568. (American Chemical Society) In this paper, the ionic liq. [empy][EtSO4] was synthesized, and its exptl. densities, dynamic viscosities, and refractive indexes were detd. from (298.15 to 343.15) K. Densities and dynamic viscosities for [empy][EtSO4] + ethanol and + water at temps. T = (298.15, 313.15, and 328.15) K have been measured over the whole compn. range and at 0.1 MPa. The detd. phys. properties have never been reported. Excess molar volumes and viscosity deviations for the binary systems at the above-mentioned temps. were calcd. and fitted to the Redlich-Kister equation. Refractive indexes were measured at 298.15 K over the whole compn. range for ethanol (1) + [empy][EtSO4] (2) and water (1) + [empy][EtSO4] (2) binary systems. The results were used to calc. deviations in the refractive index. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BD1cXnvVKksb4%253D&md5=9aa825c26e562ed1c5ba77f336f16ca414Gómez, E.; Velho, P.; Domínguez, Á.; Macedo, E. A. Thermal Analysis of Binary Mixtures of Imidazolium, Pyridinium, Pyrrolidinium, and Piperidinium Ionic Liquids. Molecules 2021, 26, 6383, DOI: 10.3390/molecules26216383 Google Scholar14Thermal Analysis of Binary Mixtures of Imidazolium, Pyridinium, Pyrrolidinium, and Piperidinium Ionic LiquidsGomez, Elena; Velho, Pedro; Dominguez, Angeles; Macedo, Eugenia A.Molecules (2021), 26 (21), 6383CODEN: MOLEFW; ISSN:1420-3049. (MDPI AG) Ionic liqs. (ILs) are being widely studied due to their unique properties, which make them potential candidates for conventional solvents. To study whether binary mixts. of pure ionic liqs. provide a viable alternative to pure ionic liqs. for different applications, in this work, the thermal anal. and molar heat capacities of five equimolar binary mixts. of ionic liqs. based on imidazolium, pyridinium, pyrrolidinium, and piperidinium cations with dicyanamide, trifluoromethanesulfonate, and bis(trifluoromethylsulfonyl)imide anions have been performed. Furthermore, two pure ionic liqs. based on piperidinium cation have been thermally characterized and the heat capacity of one of them has been measured. The detn. and evaluation of both the transition temps. and the molar heat capacities was carried out using differential scanning calorimetry (DSC). It was obsd. that the thermal behavior of the mixts. was completely different than the thermal behavior of the pure ionic liqs. present, while the molar heat capacities of the binary mixts. were very similar to the value of the av. of molar heat capacities of the two pure ionic liqs. >> More from SciFinder ®https://chemport.cas.org/services/resolver?origin=ACS&resolution=options&coi=1%3ACAS%3A528%3ADC%252BB3MXisFWrt7zN&md5=2ce4c7200564e7ff044ca4a1e10ee73a15Velho, P.; Estevinho, B. N.; Macedo, E. A. Thermophysical Properties of Mixtures Containing Cholinium l-Alaninate and Water, Ethanol, or Propan-1-ol. J. Chem. Eng. Data 2024, 69, 338– 347, DOI: 10.1021/acs.jced.3c00247 Google ScholarThere is no corresponding record for this reference.16Lopes, C.; Velho, P.; Macedo, E. A. Predicting the ionicity of ionic liquids in binary mixtures based on solubility data. Fluid Phase Equilib. 2023, 567, 113717, DOI: 10.1016/j.fluid.2022.113717 Google Scholar16Predicting the ionicity of ionic liquids in binary mixtures based o