A5085271481- Phase Equilibria and Thermodynamics
- Chemical Thermodynamics and Molecular Structure
- Thermodynamic properties of mixtures
- Spacecraft and Cryogenic Technologies
- Scientific Measurement and Uncertainty Evaluation
- Refrigeration and Air Conditioning Technologies
- Ionic liquids properties and applications
- Atmospheric and Environmental Gas Dynamics
- Carbon Dioxide Capture Technologies
- Catalysis and Oxidation Reactions
- Analytical chemistry methods development
- Enhanced Oil Recovery Techniques
- Advanced Chemical Physics Studies
- Electrochemical Analysis and Applications
- Advanced Sensor Technologies Research
- Minerals Flotation and Separation Techniques
- Advanced Power Generation Technologies
- nanoparticles nucleation surface interactions
- Catalysts for Methane Reforming
- Diffusion Coefficients in Liquids
- Spectroscopy and Laser Applications
- Advanced Thermodynamic Systems and Engines
- Petroleum Processing and Analysis
- Characterization and Applications of Magnetic Nanoparticles
- Hybrid Renewable Energy Systems
Universidad de Valladolid
2016-2024
University of Lisbon
2020
The accurate knowledge of the thermophysical and thermodynamic properties pure hydrogen mixtures plays an important role in design operation many processes involved production, transport, storage, use. These data are needed for development theoretical models necessary introduction as a promising energy carrier near future. A literature survey on both available experimental associated with mixtures, within operational ranges industrial interest composition, temperature, pressure, is presented...
Surface active ionic liquids (SAILs) combine useful characteristics of both (ILs) and surfactants, hence are promising candidates for a wide range applications.
Ionic liquids have been suggested as new engineering fluids, namely in the area of heat transfer, alternatives to current biphenyl and diphenyl oxide, alkylated aromatics dimethyl polysiloxane oils, which degrade above 200 {\deg}C pose some environmental problems. Recently, we proposed 1-ethyl-3-methylimidazolium methanesulfonate, [$C_{2}mim$][$CH_{3}SO_{3}$], a transfer fluid, because its thermophysical toxicological properties. However, there are interesting points raised this work,...
A new determination of the molar gas constant was performed from measurements speed sound in argon at triple point water and extrapolation to zero pressure. resonant cavity used. This is a triaxial ellipsoid whose walls are gold-coated steel which divided into two identical halves that bolted sealed with an O-ring. Microwave electroacoustic traducers located northern southern parts cavity, respectively, so microwave acoustic frequencies carried out same experiment. Measurements were taken...
This work aims to address the technical concerns related thermodynamic characterization of gas mixtures blended with hydrogen for implementation as a new energy vector. For this purpose, experimental speed sound measurements have been done in gaseous and supercritical phases two binary nitrogen using most accurate technique available, i.e., spherical acoustic resonator, yielding an expanded ($k$ = 2) uncertainty only 220 parts $10^{6}$ (0.022%). The cover pressure range between (0.5 20) MPa,...
The injection of hydrogen into the natural-gas grid is an alternative during process a gradual decarbonization heat and power supply. When dealing with hydrogen-enriched natural gas mixtures, performance reference equations state habitually used for should be validated by using high-precision experimental thermophysical data from multicomponent mixtures prepared lowest possible uncertainty in composition. In this work, we present density 11-compound high-calorific (hydrogen-free) mixture two...
Ionic liquids have proved to be excellent heat transfer fluids and alternatives common HTFs used in industries for exchangers other equipment. However, its industrial utilization depends on the cost per kg of production, competitive applications with biphenyl diphenyl oxide, alkylated aromatics, dimethyl polysiloxane oils, which degrade above 200 {\deg}C possess some environmental problems. The efficiency a fluid fundamental thermophysical properties influencing convective (density,...
For the gradual introduction of hydrogen in energy market, study properties mixtures with typical components natural gas (NG) and liquefied petroleum (LPG) is great importance. This work aims to provide accurate experimental ($p$, $\rho$, $T$) data for three hydrogen-propane nominal compositions (amount substance, mol/mol) (0.95$H_{2}$ + 0.05$C_{3}H_{8}$), (0.90$H_{2}$ 0.10$C_{3}H_{8}$), (0.83$H_{2}$ 0.17$C_{3}H_{8}$), at temperatures 250, 275, 300, 325, 350, 375 K, pressures up 20 MPa. A...
The mixtures 2-propanol or 2-butanol + n-alkanone, acetophenone linear monoether, cyclic ether, organic carbonate, propylene carbonate have been investigated using thermodynamic data, and in terms of the Flory theory, Kirkwood-Buff integrals. data considered are: excess molar enthalpies ($H_{\text{m}}^{\text{E}}$), volumes, entropies, temperature dependence $H_{\text{m}}^{\text{E}}$. enthalpy 2-alkanol-solvent interactions determined, different contributions to $H_{\text{m}}^{\text{E}}$ are...
The CH$_3$(CH$_2$)$_u$COO(CH$_3$)$_v$CH$_3$ + n-alkane mixtures have been investigated on the basis of an experimental database containing effective dipole moments esters, and excess molar functions systems: enthalpies ($H_{\text{m}}^{\text{E}}$), volumes ($V_{\text{m}}^{\text{E}}$), isobaric heat capacities ($C_{p\text{m}}^{\text{E}}$) isochoric internal energies ($U_{V\text{m}}^{\text{E}}$) by means application Flory model Kirkwood-Buff formalism. situation within $G_{\text{m}}^{\text{E}}$...
(Iodobenzene + n-alkane) liquid mixtures have been studied experimentally, in terms of densities and speeds sound at a pressure $p$ = 0.1 MPa the temperature range $T$ (288.15 to 308.15) K, theoretically, by application Prigogine-Flory-Patterson (PFP) model. The n-alkanes considered are n-heptane, n-decane, n-dodecane, n-tetradecane. Excess molar volumes ($V_{\text{m}}^{\text{E}}$) excess isentropic compressibilities ($\kappa_S^{\text{E}}$) calculated correlated Redlich-Kister polynomials....
The accurate knowledge of the thermophysical and thermodynamic properties pure hydrogen mixtures plays an important role in design operation many processes involved production, transport, storage use. These data are needed for development theoretical models necessary introduction as a promising energy carrier near future. A literature survey on both available experimental associated with mixtures, within operational ranges industrial interest composition, temperature pressure, is presented...