Thermo Physical Properties of Some Physical and Chemical Solvents at Atmospheric Pressure

Abstract

ne"> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>In this paper, the thermal properties including molar heat capacity, C</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>P</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>, thermal</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>conductivity</em><span style="font-family: Times New Roman,Italic; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>, λ</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>, and thermal diffusivity</em><span style="font-family: Times New Roman,Italic; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>, α</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>D</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>, of the pure physical solvents sulfolane</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>(SFL), N,N-dimethylformamide (DMF), dimethylsulfoxide (DMSO), ethylene glycol</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>(ETG), choloroform (CCL</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>3</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>H), acetonitrile (CH</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>3</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>CN), and pure chemical solvents</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA),</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>methyldiethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP) which all are</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>extensively used in natural gas refinery processes were measured at temperatures</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>ranging from (303.15 to 353.15) K and atmospheric pressure. All experimental</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>measurements were carried out by using a PSL Systemtechnik instrument in which</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>transient hot-wire method was employed to measure transport properties, </em><span style="font-family: Times New Roman,Italic; font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>λ and α</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>D</em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>. All</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>obtained data were correlated by using empirical linear temperature function with a</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>very good correlation coefficient, better than R</em><span style="font-size: 6pt; color: #000000; font-style: normal; font-variant: normal;"><em>2 </em><span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>= 0.99. Among the solvents tested in</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>this paper, except for TEA, the thermal diffusivity decreased by increasing temperature</em> <span style="font-size: 9pt; color: #000000; font-style: normal; font-variant: normal;"><em>and also except for TEA and ETG, thermal conductivity decreased with temperature.</em></span></span></span></span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>