EXCESS THERMODYNAMIC PROPERTIES CALCULATIONS FOR ALCOHOLS IN INERT SOLVENTS BASED ON FOURIER TRANSFORM INFRARED SPECTROSCOPY EASUREMENTS

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SHEKAARI H.; MODARES H.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Journal of Sciences, Islamic Republic of Iran Year:2003 | Volume:14 | Issue:2 Page(s): 133-140

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Title

EXCESS THERMODYNAMIC PROPERTIES CALCULATIONS FOR ALCOHOLS IN INERT SOLVENTS BASED ON FOURIER TRANSFORM INFRARED SPECTROSCOPY EASUREMENTS

Author(s)

SHEKAARI H. | MODARES H. | Issue Writer Certificate

Keywords

EXCESS PROPERTIES; ACTIVITY COEFFICIENT; ASSOCIATIVE FLUIDS; FT-IR; ALCOHOL + INERT SOLVENT; ASSOCIATION CONSTANT; SELF-ASSOCIATION

Abstract

Self-association of alcohols; including ethanol, methanol, cyclopentanol and octanol in separate mixtures with inert solvents have been studied using FT-IR spectroscopy. Except for the band at 3640 cm–1 in the IR spectrum of the alcohols which is due to the monomer species, the presence of other bands in the region of stretching vibrational frequencies of OH (3100-3700 cm–1) are attributed to the higher associated species such as dimmer, trimer and multimers. Association models of such as trimer, continuous linear association model, linear association with cyclic trimer (LACT) and dependent equilibrium constant model (DECM) have been used for treating the IR Spectroscopy results. The calculations indicated that the dominant species in the studied concentration range of alcohols is the trimer. The evaluated association constants in the best-fitted model (timer or LACT) were utilized to obtain the excess properties such as hE, gE and activity coefficients for the mixtures.

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APA: Copy

SHEKAARI, H., & MODARES, H.. (2003). EXCESS THERMODYNAMIC PROPERTIES CALCULATIONS FOR ALCOHOLS IN INERT SOLVENTS BASED ON FOURIER TRANSFORM INFRARED SPECTROSCOPY EASUREMENTS. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, 14(2), 133-140. SID. https://sid.ir/paper/529624/en

Vancouver: Copy

SHEKAARI H., MODARES H.. EXCESS THERMODYNAMIC PROPERTIES CALCULATIONS FOR ALCOHOLS IN INERT SOLVENTS BASED ON FOURIER TRANSFORM INFRARED SPECTROSCOPY EASUREMENTS. JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN[Internet]. 2003;14(2):133-140. Available from: https://sid.ir/paper/529624/en

IEEE: Copy

H. SHEKAARI, and H. MODARES, “EXCESS THERMODYNAMIC PROPERTIES CALCULATIONS FOR ALCOHOLS IN INERT SOLVENTS BASED ON FOURIER TRANSFORM INFRARED SPECTROSCOPY EASUREMENTS,” JOURNAL OF SCIENCES ISLAMIC REPUBLIC OF IRAN, vol. 14, no. 2, pp. 133–140, 2003, [Online]. Available: https://sid.ir/paper/529624/en

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