Kinetics of the Reversible Reaction of CO2(aq) with Ammonia in Aqueous Solution

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• 作者：Xiaoguang Wang ; William Conway ; Debra Fernandes ; Geoffrey Lawrance ; Robert Burns ; Graeme Puxty ; Marcel Maeder
• 刊名：Journal of Physical Chemistry A
• 出版年：2011
• 出版时间：June 23, 2011
• 年：2011
• 卷：115
• 期：24
• 页码：6405-6412
• 全文大小：889K
• 年卷期：v.115,no.24(June 23, 2011)
• ISSN：1520-5215

文摘

The kinetics of the interactions of aqueous ammonia with aqueous carbon dioxide/carbonate species has been investigated using stopped-flow techniques by monitoring the pH changes via indicators. The reactions include the reversible formation of ammonium carbamate/carbamic acid. A complete reaction mechanism has been established, and the temperature dependence of all rate and equilibrium constants including the protonation constant of the amine between 15 and 45 掳C are reported and analyzed in terms of Arrhenius, Eyring, and van鈥檛 Hoff relationships.