0104758 - UCHP-M 20040009 RIV NL eng J - Journal Article
Valtz, A. - Teodorescu, M. - Wichterle, Ivan - Richon, D.
Liquid Densities and Excess Molar Volumes for Water + Diethylene Glycolamine, and Water, Methanol, Ethanol, 1-Propanol + Triethylene Glycol Binary Systems at Atmospheric Pressure and Temperatures in the Range of 283.15ů363.15 K.
[Hustoty kapalin a molární dodatkové objemy binárních systémů voda + diethylenglykolamin, voda, methanol, ethanol, 1-propanol + triethylenglykol za atmosferického tlaku a při teplotách 283,15-363,15 K.]
Fluid Phase Equilibria. Roč. 215, č. 2 (2004), s. 129-142. ISSN 0378-3812. E-ISSN 1879-0224
R&D Projects: GA ČR GA104/03/1555
Institutional research plan: CEZ:AV0Z4072921
Keywords : excess molar volume * density * triethylene glycol
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.356, year: 2004

Liquid densities and excess molar volumes (VE) are reported for the binary water + diethylene glycolamine, and water, methanol, ethanol, 1-propanol + triethylene glycol systems at atmospheric pressure and temperatures between 283.15 and 363.15 K in 10 K intervals. Negative VE were found for all investigated systems. At given temperature, the most negative VE is for the water + diethylene glycolamine system. For water containing systems, VE increase with temperature while the inverse effect was observed for alcoholic systems i.e. VE became more negative with increasing temperature. For the triethylene glycol systems at constant temperature, absolute value of VE decreases in the series: water > methanol > ethanol > 1-propanol within the whole composition range. The experimental results have been correlated using the three parameter RedlichůKister equation.

Byly změřeny hustoty a molární dodatkové objemy v řadě soustav obsahující wodu, alifatické alkoholy, diethylenglykoamin a triethylenglykol. Největší negativní odchylky má soustava voda – diethylenglykolamin. V ostatních vodných systémech VE stoupá s teplotou. Experimentální data byla korelována Redlich-Kisterovou rovnicí.
Permanent Link: http://hdl.handle.net/11104/0012024