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Removal of carbon dioxide by absorption into blended amines: kinetics of absorption into aqueous AMP/HMDA, AMP/MDEA, and AMP/piperazine solutions

Content Provider	Royal Society of Chemistry (RSC)
Author	Lee, Sang-Sup Shim, Jae-Goo Hwang, Hye-Ryun Oh, Kwang-Joong Choi, Won-Joon Park, Sang-Wook Cho, Ki-Chul
Copyright Year	2007
Abstract	The emissions of anthropogenic carbon dioxide (CO2) are believed make a significant impact on global climate change. Hence, amine chemical absorption technology has been suggested to separate and recover CO2. In this study, reaction rate constants between CO2 and blended amines were determined by measuring their absorption rate for CO2. The experiments were carried out to investigate the characteristics of CO2 absorption by using additional absorbents such as hexamethylenediamine (HMDA), N-methyldiethanolamine (MDEA) or piperazine blended into 2-amino-2-methyl-1-propanol (AMP) in an agitated vessel. The absorption rates of CO2 into aqueous blended amine solutions were measured. Additive concentrations of 1, 3, and 5 wt% were added for each 30 wt% AMP solution. The results showed that the addition of HMDA, MDEA or piperazine into AMP increased the absorption rate as compared to AMP alone. Of these additives, HMDA showed the most enhancement in the reaction rate of AMP. The reaction rate constants of HMDA, MDEA and piperazine blended into AMP at 303–343 K were given by kH = 3.84 × 1010exp(−5361/T), kM = 6.60 × 109exp(−4959/T), and kP = 9.09 × 109exp(−5058/T), respectively.
Starting Page	594
Ending Page	598
Page Count	5
File Format	HTM / HTML PDF
ISSN	14639262
Volume Number	9
Issue Number	6
Journal	Green Chemistry
DOI	10.1039/b614101c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	HMDA MDEA AMP Carbon dioxide Climate change Reaction rate Hexamethylenediamine Methyl diethanolamine Piperazine 1-Propanol Adenosine monophosphate
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution

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Kinetics of Absorption of Carbon Dioxide into Aqueous Solutions of 2-Amino-2-methyl-l-propanol + Diethanolamine

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Removal of carbon dioxide by absorption into blended amines: kinetics of absorption into aqueous AMP/HMDA, AMP/MDEA, and AMP/piperazine solutions

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