A5009519835- Thermodynamic properties of mixtures
- Phase Equilibria and Thermodynamics
- Chemical Thermodynamics and Molecular Structure
- Ionic liquids properties and applications
- Chemical and Physical Properties in Aqueous Solutions
- Analytical Chemistry and Chromatography
- Process Optimization and Integration
- Crystallization and Solubility Studies
- Surfactants and Colloidal Systems
- Inorganic and Organometallic Chemistry
- Electrochemical sensors and biosensors
- Chemical Synthesis and Reactions
- Diffusion Coefficients in Liquids
- Dyeing and Modifying Textile Fibers
- Enzyme Catalysis and Immobilization
- Electrochemical Analysis and Applications
- Advanced Physical and Chemical Molecular Interactions
- Lubricants and Their Additives
- Spanish History and Politics
- History of Education in Spain
- Analytical chemistry methods development
- Various Chemistry Research Topics
- Carbon Dioxide Capture Technologies
- Chemistry and Chemical Engineering
- Dye analysis and toxicity
Universidade Federal da Bahia
2013-2023
Universidade Federal do Recôncavo da Bahia
2022-2023
Centro Universitário de Araraquara
2022-2023
Universidade Estadual Paulista (Unesp)
2023
University of the Basque Country
2004-2022
Universidade Estadual de Maringá
2022
Hospital Ana Nery
2013-2020
Kalamazoo College
2018
Universidade de Santiago de Compostela
2008-2014
Universidade Salvador
2014
This report describes the synthesis of ionic liquids that incorporate N-methyl-2-hydroxyethylammonium cation with various carboxylic acid anions and study some their physical properties, including self-diffusion coefficients, density, speed sound, viscosity, refractive index. 1H 13C NMR spectra were used to characterize chemical structure species in concordance FT-IR spectra. DOSY was determine coefficients components, which consistent formation a lamellar or micellar liquid-crystal phase...
This paper reports on the synthesis of new short aliphatic chain ionic liquids and study temperature dependence density, ultrasonic velocities, conductivity in range 278.15−338.15 K. Fourier transform infrared spectra establishes their simple salt structure. Because polarity, are able to dissolve polar solvents inorganic salts, all them showing high tolerance hydroxylic media. The observed trend studied properties points out special packing these liquids, as well strong influence steric...
In this work we present experimental values of the density, refractive index, and speed sound binary mixtures methanol or ethanol plus hexane, heptane, octane at temperatures 303.15, 308.15, 313.15, 318.15 K atmospheric pressure, as a function mole fraction. The results have been fitted funtion composition. A comparison with other data in literature has made.
A study of the ecotoxicity different short aliphatic protic ionic liquids (PILs) on terrestrial organisms was conducted. Tests performed within present include those assessing effects PILs soil microbial functions (carbon and nitrogen mineralization) plants. The results show that nominal lowest-observed-adverse-effect concentration (LOAEC) values were 5,000 mg/kg (dry soil) for plant test in two species (Lolium perenne, Allium cepa), 1,000 one (Raphanus sativus), 10,000 carbon transformation...
Dyeing processes are highly important for differentiation of textile products, and in general, they use a huge amount water chemical additives, generating great environmental impact. In the last years, interest finding alternative environmentally friendly solvents these has increased, with double aim: to decrease quantity used improve dyeing quality. this work, we analyze an procedure dye cotton fabrics only two agents, polyfunctional reactive protic ionic liquid (PIL) as solvent, avoiding...
This paper reports on the synthesis of five protic ionic liquids namely 2‐hydroxy ethylammonium acetate, diethylammonium propionate, lactate, and lactate study shear temperature dependency viscosity at range 313.15–343.15 K. 1 H nuclear magnetic resonance Fourier transform infrared spectroscopy spectra establish simple salt structure these compounds. Because their polar character, are able to dissolve solvents inorganic salts, all them showing high tolerance into hydroxylic media. The...
Liquid−liquid equilibria for methanol + n-alkanes (C9 to C12) were determined in the temperature range (278.15 308.15 K), using a visual static method. Densities, refractive indices, and speeds of sound also measured at 288.15, 298.15, K acetone n-alkane mixtures 298.15 study influence on mixing phenomena. The results used model liquid−liquid coexistence derived properties trend. calculated values based UNIQUAC equation found be similar those NRTL model. Prigogine−Flory−Paterson theory was...
Isobaric vapor–liquid equilibria data at 101.3 kPa were reported for the binary mixtures (methyl acetate + (water or methanol ethanol), ethanol) and (ethanol water)). The experimental tested thermodynamic consistency by means of Wisniak method demonstrated to be consistent. correlated using Wilson, NRTL UNIQUAC models activity coefficients predicted UNIFAC PSRK equation state testing theirs capability. results show that obtained studied systems are more reliable than other published data.
Abstract This work reports values of the density, refractive index and speed sound binary mixtures acetone or methanol with (2-methyl, 1-propanol, 3-methyl, 1-butanol, 1,2-ethanediol, 1,2-propanediol 1,3-propanediol) at 298.15 K atmosphere, as a function mole fraction. From experimental values, corresponding excess derived magnitudes were computed (excess molar volumes, changes on mixing isentropic compressibility mixing), variable-degree polynomials being fitted to results. Only expansive...
Densities, refractive indices, and speeds of sound at 298.15 K isobaric vapor−liquid equilibria (VLE) data 101.3 kPa were reported for the binary mixtures containing ethyl acetate + 1-pentanol ethanol 2-methyl-1-propanol. Excess molar volumes, index deviations, changes speed on mixing calculated from measurement results that fitted with Redlich−Kister polynomials. VLE experimental tested thermodynamic consistency by means a modified Dechema test demonstrated to be consistent. The activity...
Abstract Speeds of sound, densities and refractive indices the binary mixtures containing acetone, methanol, ethanol, or 2-butanone have been measured at 298.15 K atmospheric pressure, in whole composition diagram, derived excess values being determined. Parameters analytical expressions which represent dependences variation properties are reported. Values physical were compared with results obtained by different prediction methods. The volumes estimated using applications Heller equation,...