Add time:09/28/2019 Source:infona.pl
A new set of values for the molar heat capacities of N-(2-aminoethyl)piperazine (AEP) and N,N,N′-trimethylethylenediamine (tMEDA) and their aqueous mixtures over the whole range of compositions are reported in the present work. Molar heat capacities of ternary mixtures of each polyamine with piperazine (PZ): (AEP+PZ+H2O) and (tMEDA+PZ+H2O) were also measured. Measurements were done over the temperature range T=(303.2–353.2)K and p=101.3kPa by the differential scanning calorimetry technique. Excess molar heat capacities of aqueous binary mixtures were correlated with composition and temperature using a Redlich–Kister relation, which was then used to correlate molar heat capacities of the mixtures at different temperatures and compositions. The equation fit the results with the average absolute deviation (AAD) of 2.1% and 0.2% for the excess molar heat capacity and molar heat capacity, respectively. A modified Söhnel and Novotný equation was applied to represent the composition and temperature dependence of the molar heat capacity of aqueous ternary mixtures at AAD between the correlated and the experimental data of about 0.1%. The correlations proposed here are of acceptable accuracy for application in process design and engineering.
We also recommend Trading Suppliers and Manufacturers of N,N,N'-TRIMETHYLETHYLENEDIAMINE (cas 142-25-6). Pls Click Website Link as below: cas 142-25-6 suppliers
About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia
Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog
©2008 LookChem.com,License: ICP
NO.:Zhejiang16009103
complaints:service@lookchem.com Desktop View