混合醇胺（立體障礙醇胺 AEPD, AHPD + 多元胺 DETA, EEDA, DAB）水溶液之莫耳比熱量測研究

Molar heat capacity measurement for aqueous blended amines containing sterically hindered amines (2-Amino-2-ethyl-1,3-propanediol, 2-Amino-2-hydroxymethyl-1,3-propanediol) and polyamines (Diethylenetriamine, N-Ethylethylenediamine, 1,4-Diaminobutane) solutions

黃秉洋(Bing-Yang Huang)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2021年)

https://doi.org/10.6840/cycu202100199

摘要

本研究使用示差掃描熱分析儀 (Differential Scanning Calorimeter, DSC) 量測混合醇胺（立體障礙醇胺 / 多元胺）水溶液之莫耳比熱。立體障礙醇胺包括2-Amino-2-ethyl-1,3-propanediol (AEPD)及2-Amino-2-hydroxymethyl-1,3-propanediol (AHPD)；多元胺系統包括Diethylenetriamine (DETA)、N-Ethylethylenediamine (EEDA) 及1,4-Diaminobutane (DAB)。
比熱量測系統包括: (1) 純物質系統量測AEPD及AHPD (2) 雙成分系統所量測的濃度範圍 (AEPD / H2O) 莫耳分率為 xamine = 0.15－0.90；(AHPD / H2O)為 xamine = 0.02－0.08 (3) 三成分系統 (Sterically hinderd amine / polyamine / H2O) 其水的濃度固定在70 wt % 及60 wt %，當水濃度為70 wt % 時，立體障礙醇胺與多元胺濃度之比例為 (5/25、10/20、15/15、20/10、25/5 wt %)。當水濃度為60 wt %時，濃度比例為 (5/35、10/30、15/25 wt %)。測溫的範圍為30－80 ℃，本實驗量測的比熱值之不確定性 (uncertainty) 為 2 %。
量測所得之比熱值由相關之關係式來代表，可將各系統之數值迴歸成溫度與濃度的關係式，比熱值模型應用於燃燒後處理法中可成為建立二氧化碳捕捉收集系統的計算依據。

關鍵字

立體障礙醇胺混和水溶液之莫耳比熱量測

並列摘要

In this study, the molar heat capacity of aqueous blended amine (sterically hinderd amine / polyamine) systems were determined by Differential Scanning Calorimeter (DSC). The sterically hinderd amine 2-amino-2-ethyl-1,3-propanediol (AEPD)、2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) and polyamines diethylenetriamine (DETA)、N-ethylethylenediamine (EEDA)、1,4-diaminobutane (DAB) were applied for this measurement.
The temperature of experiment was in the range of 30－80 ℃. The specific heat measurement system includes: (1) pure amine system, the heat capacity of sterically hindered amine AEPD and AHPD. (2) The concentration of AEPD in the binary aqueous sterically hindered amine system is 0.15－0.90 mole fraction, and the concentration of AHPD is 0.02－0.08 mole fraction. (3) The ternary system consist of mixed sterically hindered amines and polyamines, when the concentration of water is fixed at 70 % , the ratio of sterically hindered amines and polyamines is 5/25、10/20、15/15、20/10、25/5 wt % ; the concentration of water is fixed at 60 % , the ratio of sterically hindered amines and polyamines is 5/35、10/30、15/25 wt % .The overall uncertainty of the measured CP is estimated to be 2 % .
The measured specific heat value is represented by the relationship between temperature and concentration. The model can be used to calculation basis for the carbon dioxide capture and collection system. The results show that there is a good agreement between the experimental data and the regression calculation.

並列關鍵字

Molar heat capacity measurement for aqueous blended amines

參考文獻

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