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Thermophysical Properties of Aqueous Piperazine and Aqueous (N-Methyldiethanolamine plus Piperazine) Solutions at Temperatures (298.15 to 338.15) K

Ayyaz, Muhammad and Mohamed I. Abdul, Mutalib and Thanabalan, Murugesan and Amir, Shafeeq (2009) Thermophysical Properties of Aqueous Piperazine and Aqueous (N-Methyldiethanolamine plus Piperazine) Solutions at Temperatures (298.15 to 338.15) K. JOURNAL OF CHEMICAL AND ENGINEERING DATA , 54 (8 ). pp. 2317-2321. ISSN 0021-9568

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Abstract

In the present work, thermophysical properties such as density (rho), dynamic viscosity (eta), refractive index (n(D)), and surface tension (sigma) of aqueous piperazine (PZ) solutions with mass fractions (100w = 1.74, 5.16, 10.35) have been measured from temperatures (298.15 to 338.15) K. All of these properties have also been measured for the aqueous blends of N-methyldiethanolamine (MDEA) and piperazine (PZ) with mass fractions {100(w(1)/w(2)) = 32.28/1.74, 32.28/5.16, 32.28/10.35, 48.80/1.74, 48.80/5.16, 48,80/10.35)} for the entire temperature range. The limit of PZ solubility in water was measured by the addition of a known quantity of anhydrous PZ (solid crystals) in 20 mL of distilled water at temperatures (278 to 343) K with a regular interval of 5 K. The experimental values of the studied physical properties have been compared with the literature and also correlated as a function of temperature. The coefficients of thermal expansion ((X,) values have been calculated from their experimental density data using an empirical correlation. A thermogravimetric analyzer (TGA) has been used to explore the thermal stability of the studied solvent systems at a heating rate of 10 degrees C.min(-1).

Item Type:Article
Impact Factor:Cites in 2009 to articles published in: 2008 = 757 Number of articles published in: 2008 = 547 2007 = 941 2007 = 455 Sum: 1698 Sum: 1002 Calculation: Cites to recent articles 1698 = 1.695 Number of recent articles 1002
Uncontrolled Keywords:Chemistry, Multidisciplinary; Engineering, Chemical
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:2343
Deposited By: Mr Helmi Iskandar Suito
Deposited On:23 Jun 2010 11:00
Last Modified:19 Jan 2017 08:25

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