Measurements of heat capacity of aqueous alkanolamine solutions：DEA/MDEA/H2O, DEA/AMP/H2O, and DEA/2-PE/H2O systems

• Main Authors: Tzn-Wei Shih, 施子偉
• Other Authors: Meng-Hui Li
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/12501146114320867311

碩士 === 中原大學 === 化學工程研究所 === 89 === The heat capacities of aqueous mixtures of diethanolamine with N-methyldiethanolamine, diethanolamine with 2-amino-2-methyl-1-propanol and diethanolamine with 2-piperidine ethanol from 30 to 80℃ with a differential sacnning calorimeter (DSC) have been measured. An excess molar heat capacity expression using the Redlich-Kister equation for the composition dependence is used to represent the measured CP of aqueous alkanolamine solutions. The overall average absolute percentage deviations for the calculation of the molar heat capacities are 0.1% and 0.16% for the binary and ternary systems, respectively. The heat capacities of aqueous mixtures of diethanolamine with N-methyldiethanolamine, diethanolamine with 2-amino-2-methyl-1-propanol and diethanolamine with 2-piperidine ethanol presented in this study are, in general, of sufficient accuracy for most engineering-design calculations.