INVESTIGADORES
PEREDA Selva
congresos y reuniones científicas
Título:
Prediction of volumetric data for binary supercritical mixtures
Autor/es:
M. GONZALEZ PRIETO; F. A. SANCHEZ; S. PEREDA
Lugar:
Eindhoven
Reunión:
Simposio; Phase equilibria group contribution modeling of furan derivatives with the GCA-EoS; 2014
Resumen:
Biomass has been a historical source of food and natural products; however, it has also become a promissory source of compounds for industrial and commercial applications in the long term. More recently, with the increase of fossil fuel prices, biorefineries have appeared as an alternative complementary to traditional refineries in order to obtain biofuels. Nevertheless, many authors agree that the success of biorefineries will be based not only in biofuel production but in value-added products [1-3]. Pharmaceutical compounds, polymers, insecticides, fuel additives and different raw material are some examples. In the last years, several oxygenated organic compounds have been studied as fuel additives, to improve combustion and decrease gas emissions. Ethanol is today one of the most used fuel additives. However, ethanol has some disadvantages because of its water affinity, high volatility and low energy density. This has encouraged the search for alternative oxygenates, such as 1-butanol or ethers like methyl-tertbutylether (MTBE). Recently, new progress has been achieved to convert biomass into 2,5-dimethylfuran (DMF) from fructose [4][5]. Moreover, it has been shown [6] that cellulose can be converted into different furanic derivatives such as furfural, hydroxymethylfurfural, levulinic acid, which are added-value products. This has carried DMF as an interesting candidate for fuel blending, because it has competitive physical properties against ethanol: higher boiling point, same energy density as petroleum and low affinity with water [7]. Moreover, a catalytic process has been recently reported to produce DMF, which is chemically controlled and less expensive than biological methods [5].In this work we extend the Group Contribution with Association Equation of State (GCA-EoS) [7] to furan derivatives. Previous works have shown the capability of this model to reproduce the phase equilibria of complex mixtures, with hydrocarbons, alcohols, carboxilic acids, amines and water [8-10]. We aim to develop a thermodynamic tool to predict the phase equilibria of biofuels and related oxygenated mixtures for process and product exploration.