Ultrasonic and volumetric study of aqueous solution of ethylene glycol, propylene glycol in iso-propanol
نویسندگان
چکیده
Ultrasonic velocities, u, and densities, ρ of 0.5 m, 1.0 m and 1.5 m aqueous ethylene glycol and propylene glycol solutions in iso-propanol have been measured over the entire composition range at 308.15 K. From this experimental data, deviation in ultrasonic velocity, ∆u, deviation in isentropic compressibility, ∆ks, excess intermolecular free length, E f L , excess acoustic impedance, Z E and excess molar volume, E m V have been determined. It has been observed that ultrasonic velocity increases first and attained a maximum value thereafter decreases. Negative values of E m V , ∆ks , E f L and positive values of ∆u, Z , are observed over the entire composition range in the mixtures studied. The observed negative and positive values of various excess and deviation parameters are attributed to the existence of strong interactions such as geometrical fitting of smaller molecules into the voids created by larger molecules in the liquid mixtures. The measured values of ultrasonic velocity for all the investigated solutions have been compared with the theoretically estimated values using empirical relations such as, Nomoto, Van Dael and Vangeels ideal mixing relation and Impedance dependence relation.
منابع مشابه
Study of Surface Tension of Binary Mixtures of Poly (Ethylene Glycol) in Water and Poly (Propylene Glycol) in Ethanol and its Modeling Using Neural Network
متن کامل
Experimental Investigation on the Thermal Conductivity and Viscosity of ZnO Nanofluid and Development of New Correlations
In this paper, the measurement of the viscosity of ZnO in ethylene glycol, propylene glycol, mixture of ethylene glycol and water (60:40 by weight), and a mixture of propylene glycol and water (60:40 by weight) and the thermal conductivity in ethylene glycol and propylene glycol as base fluids in the range of temperature from 25 ºC to 60 ºC are investigated. The results indicate that as the tem...
متن کاملBulk chemicals from biomass
Given the current robust forces driving sustainable production, and available biomass conversion technologies, biomass-based routes are expected to make a signifi cant impact on the production of bulk chemicals within 10 years, and a huge impact within 20–30 years. In the Port of Rotterdam there is a clear shortterm (0–10 year) substitution potential of 10–15 % of fossil oil-based bulk chemical...
متن کاملElectrochemically mediated reduction of horseradish peroxidase by 1,1'-ferrocenedimethanol in organic solvents.
Cyclic voltammetry is an efficient means of analyzing the catalytic reduction of H2O2 at immobilized horseradish peroxidase (HRP)-Eastman AQ 55 electrodes in the presence of 1,1'-ferrocenedimethanol as a one-electron reversible cosubstrate. This system was employed to study the kinetics of the reduction of compound II of HRP in a number of organic solvents. An electrocatalytic response was dete...
متن کاملExperimental studies on toxicity of ethylene glycol alkyl ethers in Japan.
Past studies on the toxicological effects of ethylene glycol alkyl ethers as well as the recent data on these chemicals in Japan are reviewed. Only a few researchers have participated in the study of ethylene glycol alkyl ethers in Japan. The effects of ethylene glycol alkyl ethers on testis and embryotoxic effects of ethylene glycol monomethyl ether (EGM) have been studied, as has the teratoge...
متن کامل