Percorrer por autor "Kulik, Ana Carolina"
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- Experimental study of thermodynamic properties of liquid mixtures with interest as biofuels: binary systems: 2-Propanol, DIPE and 1 HexenePublication . Kulik, Ana Carolina; Brito, Paulo; Aguilar Romero, Fernando; Muñoz Rujas, NataliaAbout 25% of CO2 emissions in the EU are originated by the transport sector. In this segment, road transport is the largest emitter, accounting for over 70% of all greenhouse gas (GHG) emissions. One of the main strategies for reducing emissions is the promotion of low emission alternative energy for transport, such as biofuels. Some alcohols and ethers, such as oxygenate additives, are added to gasoline to reduce the emission of gases that produce environmental impact. These components can be obtained from renewable or agricultural raw materials, reducing dependence on fossil sources. The thermodynamic properties of liquid blends with interest as biofuels are of great importance to the petrochemical industry, not only because of their application in new gasoline formulations but also for refining design, purification and deposition processes. This work reports experimental densities, speeds of sound, refractive indices of binary systems 2-propanol + di-isopropyl-ether (DIPE), 2-propanol + 1-hexene and di-isopropyl-ether (DIPE) + 1-hexene at the temperature of 298.15 K. Besides, the viscosity of the same binary systems at the temperatures of 293.15 K, 298.15K and 313.15K are also reported. Excess molar volumes, deviations in isentropic compressibility and deviations in speeds of sound were correlated by the Redlich-Kister polynomial. In total, 756 experimental measurements were collected and analyzed to scientifically contribute for the validation of new models and equations which could satisfactorily predict the liquid blend behavior of these compounds as biofuels.