Experimental determination of carbamate formation and amine protonation constants in 3-amino-1-propanol–CO2–H2O system and their temperature dependency. (June 2015)

• Record Type: Journal Article
• Authors: Benamor, Abdelbaki; Al-Marri, Mohammed Jaber; Hawari, Alaa
• Is Part Of: International journal of greenhouse gas control. Volume 37(2015:Jun.)
• Page Start: 237
• Page End: 242
• Publication Date: 2015-06
• Subjects: Carbamate -- 3-Amino-1-propanol -- Carbon dioxide -- Equilibrium constant -- Protonation constant; Greenhouse gases -- Environmental aspects -- Periodicals; Air -- Purification -- Technological innovations -- Periodicals; Gaz à effet de serre -- Périodiques; Gaz à effet de serre -- Réduction -- Périodiques; Air -- Purification -- Technological innovations; Greenhouse gases -- Environmental aspects; Periodicals; 363.73874605
• DOI: 10.1016/j.ijggc.2015.03.026
• Languages: English
• ISSNs: 1750-5836

Abstract

Abstract: The equilibrium constant for the formation of carbamate in 3-amino-1-propanol–CO2 –H2 O system was evaluated at different CO2 loadings, different temperature values, and different amine protonation constant. The studied temperature varied from 298 to 328 K in an increment of 10 K and ionic strengths up to 1.5 M. The variation of the thermodynamic equilibrium constant with temperature was modeled according to the relationship of log K 1 = 1846.8/ T − 4.4152, while temperature dependency of amine protonation constant was correlated by log K 2 = 2786.5/ T + 0.5253.