| 碱土金属碳酸盐催化乙醇胺-CO2反应机理研究 |
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| 引用本文： | 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].上海理工大学学报,2018,39(4):25-31. |
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| 作者姓名： | 周云龙 崔立峰 史焕聪 |
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| 作者单位： | 上海理工大学 环境与建筑学院, 上海 200093,上海理工大学 环境与建筑学院, 上海 200093,上海理工大学 环境与建筑学院, 上海 200093 |
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| 基金项目： | 省部级人才项目（上海市青年东方学者）（QD2016011） |
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| 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。
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| 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 |
| 收稿时间： | 2017/11/15 0:00:00 |
Research on Reaction Mechanism of Alkaline Earth Metal Carbonates Catalyzed Monoethanolamine-CO2 |
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| ZHOU Yunlong,CUI Lifeng and SHI Huancong.Research on Reaction Mechanism of Alkaline Earth Metal Carbonates Catalyzed Monoethanolamine-CO2[J].Journal of University of Shanghai For Science and Technology,2018,39(4):25-31. |
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| Authors: | ZHOU Yunlong CUI Lifeng and SHI Huancong |
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| Institution: | School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China and School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | 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. |
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| Keywords: | reaction kinetics catalytic CO2 absorption graphical method heterogeneous catalyst reaction order |
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