| 周云龙,崔立峰,史焕聪.碱土金属碳酸盐催化乙醇胺-CO2反应机理研究[J].有色金属材料与工程,2018,39(4):25-31. |
| 碱土金属碳酸盐催化乙醇胺-CO2反应机理研究 |
| Research on Reaction Mechanism of Alkaline Earth Metal Carbonates Catalyzed Monoethanolamine-CO2 |
| |
| DOI：10.13258/j.cnki.nmme.2018.04.005 |
| 中文关键词: 反应动力学 催化CO2吸收 图解法 非均相催化剂 反应级数 |
| 英文关键词:reaction kinetics catalytic CO2 absorption graphical method heterogeneous catalyst reaction order |
| 基金项目:省部级人才项目（上海市青年东方学者）（QD2016011） |
|
| 摘要点击次数: 1844 |
| 全文下载次数: 1564 |
| 中文摘要: |
| 利用碱土金属碳酸盐（CaCO3）进行非均相催化乙醇胺（MEA）-CO2吸收试验。催化剂质量为0.0～25.0 g，吸收剂浓度分别为1.0，3.0和5.0 M（mol/L）。在试验基础上，运用图解法开发MEA溶液吸收CO2动力学模型，验证催化剂的有效性。运用积分法处理试验数据，并对数据进行线性回归分析，得到适用于0，1，2级反应速率方程。经验证，在胺转化率XA<0.80时，MEA-CO2反应符合1级反应速率方程。通过简要评估CaCO3的催化效果，发现其可将2级非催化反应速率常数kZ提高至原来的1.1～1.8倍。因此，CaCO3是一种能够有效促进MEA-CO2相互作用的催化剂。 |
| 英文摘要: |
| Heterogeneous catalytic Monoethanolamine(MEA)-CO2 absorption was catalyzed by alkaline earth metal carbonates(CaCO3).The qualities of catalyst are from 0.0 to 25.0 g,and the absorbent concentrations are 1.0,3.0 and 5.0 M(mol/L),respectively.On the basis of experiments,the kinetic model for MEA solvents absorbing CO2 was developed by graphical method to verify the effectiveness of catalyst.The rate equations suitable for the 0,1,and 2 order reactions were obtained by using integral method to process data and subsequently linear regression analyzing.It's verified that the MEA-CO2 reaction coincides with the first-order reaction rate equation at XA<0.80.By briefly evaluating the catalytic effect of CaCO3,it's found that the second-order non-catalytic rate constant kZ can be raised to 1.1-1.8 times as high as before.Therefore,CaCO3 is an effective catalyst for promoting the MEA-CO2 interaction. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
