The Molar Heat Capacity Measurements for the Aqueous Tertiary Amine (1DMAP and 3DMAP)/Polyamine ( DETA and TETA ) Solutions
| Autor: | Yi-Chieh Chou, 周義傑 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 Due to global warming is increasing recently, the issue of reducing carbon dioxide is much important; we could find amine that is good absorbent in the literature. Blended amines are worth exploring recent research projects, as they contribute to properties of carbon dioxide capture. In addition to absorbing carbon dioxide thermo-physical properties, molar heat capacity in carbon dioxide capture plays an important role. In this study, the heat capacities of ternary systems of polyamines (DETA, TETA)/(1DMAP, 3DMAP)/H2O were measured over the temperature range of 3080C and different solute concentrations: (1DMAP, 3DMAP)/Polyamines (5/35, 20/20, 30/10, 35/5wt%) + water (60wt%) and (1DMAP, 3DMAP)/Polyamines (10/20, 15/15, 20/10, 25/5 wt%) + water(70wt%) using a heat flux differential scanning calorimeter (DSC). For the pure systems, the temperature dependence of the molar heat capacity was represent by a second order equation. The obtained CP data were correlated as function temperature and composition using a RedlichKister expansion and a modified Söhnel and Novotný equation for the binary aqueous polyamines solutions and ternary aqueous systems, respectively. Thus, it can be said the proposed correlations in this study that can be utilized to yield reliable estimation of the heat capacities of the studied systems. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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