Analysis of the CO2 and NH3 reaction in an aqueous solution by 2D IR COS: Formation of bicarbonate and carbamate

The two-dimensional (2D) infrared correlation spectra obtained from the reaction time- and concentration-dependent IR spectra elucidates the reaction of CO2 and NH3 in an aqueous solution for CO2 absorption. In the synchronous 2D correlation spectra, the interrelation of the proton with carbarnate and bicarbonate indicates that the pH level affected the formation reactions of the two products. Furthermore, the interrelation of carbamate with bicarbonate confirmed the conversion of carbarnate into bicarbonate with the release of protons (or the decrease of the pH). From the experimental results including the asynchronous 2D correlation spectra, the reaction of the CO2 and aqueous ammonia proceeded through the following steps: formation of carbamate, formation of bicarbonate, release of protons, and conversion of carbamate into bicarbonate. The analysis of the formation of carbarnate and bicarbonate by 2D infrared correlation spectroscopy provides useful information on the reaction mechanism Of CO2 and NH3 in aqueous solutions.
Publisher
AMER CHEMICAL SOC
Issue Date
2008-07
Language
ENG
Keywords

2-DIMENSIONAL CORRELATION SPECTROSCOPY; CARBON-DIOXIDE; GREENHOUSE-GAS; AMMONIA; ABSORPTION; REMOVAL; WATER; ACID

Citation

JOURNAL OF PHYSICAL CHEMISTRY A, v.112, no.29, pp.6558 - 6562

ISSN
1089-5639
DOI
10.1021/jp800991d
URI
http://hdl.handle.net/10203/12975
Appears in Collection
CBE-Journal Papers(저널논문)
  • Hit : 249
  • Download : 3
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 35 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0