کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
673354 1459498 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of intermolecular interactions in binary mixtures of 2-(dimethylamino)ethanol with methanol and ethanol at various temperatures
ترجمه فارسی عنوان
بررسی تعاملات بین مولکولی در مخلوط دوتایی 2- (دی متیل آمینو) اتانول با متانول و اتانول در دماهای مختلف
کلمات کلیدی
تراکم، سرعت التراسونیک، پارامترهای اضافی، 2- (دی متیل آمینو) اتانول، آلکانال، تعامل مولکولی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• The study reports density and ultrasonic velocity data of 2-(dimethylamino)ethanol + methanol/ethanol mixtures.
• To elucidate the interactions in 2-(dimethylamino)ethanol + methanol/ethanol binary mixtures.
• Provides information on nature and relative strength of interactions in these mixtures.
• Correlates physicochemical properties with interactions in these mixtures.

The densities, ρ and ultrasonic speeds, u of the binary mixtures of 2-(dimethylamino)ethanol (DMAE) with methanol/ethanol, including those of pure liquids, over the entire composition range were measured at 298.15, 308.15 and 318.15 K. From the experimental data, the excess molar volumes, VmE and excess isentropic compressibilities, κsE have been calculated. The excess partial molar volumes, V¯m,1E and V¯m,2E and excess partial molar isentropic compressions, K¯s,m,1E and K¯s,m,2E over the whole composition range; and partial molar volumes, V¯m,1° and V¯m,2°, partial molar isentropic compressions, K¯s,m,1° and K¯s,m,2°, excess partial molar volumes, V¯m,1°E and V¯m,2°E, and excess partial molar isentropic compressions, K¯s,m,1°E and K¯s,m,2°E at infinite dilution have also been calculated. The variations of these parameters with composition and temperature are discussed in terms of intermolecular interactions. The IR spectra of these mixtures have also been recorded at 298.15 K.

The densities and ultrasonic speeds of the binary mixtures over the entire composition range were measured at various temperatures at atmospheric pressure. The excess molar volumes, isentropic compressibilities, and molar isentropic compressions have been calculated. The variations of these parameters with composition and temperature are discussed. The IR spectra were recorded they further supported the conclusion drawn from excess parameters, which indicates the presence of intermolecular hydrogen bonding between the oxygen atom of DMAE molecules and hydrogen atom of methanol and ethanol molecules in these mixtures..Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 586, 20 June 2014, Pages 58–65
نویسندگان
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