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7565724 
Meetings & Symposia 
New amines for carbon dioxide separation from gas-mixtures 
Dibenedetto, A; Aresta, M; Girardi, R 
2003 
San Antonio, TX 
Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference 
48 
1 
167-168 
English 
The uptake of CO2 using aliphatic di-amines (H2N(CH2)2NH(CH2) 3Si(OMe)3 (I) and CH3(CH2)2NH(CH2) 2NH2 (II) was studied. They were able to capture 1 mole of CO2 per mole of amine. Their behavior was compared with that of MEA used at industrial level in the same reaction conditions. Differently from MEA, 1 mole of CO2 per mole of amine was uptaken by amines I and II. The amine I afforded an intra-molecular carbamate. The di-amines converted into a xerogel were more efficient than liquid amines or amine solutions in water or organic solvents for capturing CO2 from a gas mixture. 
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