Thermal degradation of amines for CO₂ capture

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• 作者：Gary T Rochelle ^{gtr@che.utexas.edu}
• 刊名：Current Opinion in Chemical Engineering
• 出版年：2012
• 期刊代码：pc7_22113398
• 类别：ce
• 出版时间：May, 2012
• 卷：1
• 期：2
• 页码：183-190
• 文件大小：369 K

摘要

Amine scrubbing will be an important technology for CO₂ capture and storage. The degradation of the amine at 100-150 掳C limits the maximum T/P and therefore the energy performance of the solvent regeneration. This is a review of the rate, products, and mechanisms of thermal degradation. Primary and secondary ethanolamines and ethylenediamines degrade at 100-130 掳C as they form cyclic oxazolidinones and ureas. Tertiary amines can be more resistant to degradation if they do not include methyl and ethanol groups. Piperazine structures and long chain diamines such as hexamethylenediamine degrade by ring opening and closing and can be used at 150-160 掳C. Thermal degradation can produce products that are more volatile than the parent amines.