OXIDATIVE DEGRADATION OF CO2 ABSORBING AQUEOUS AMINE SOLVENTSRAHUL R. BHOSALE1, ANAND KUMAR, FARES A. ALMOMANI, SHAHD GHARBIA, DARREN DARDOR, MEHAK JILANI, JAMILA FOLADY, MOUSTAFA ALI1, EMAN EID, SHIVA YOUSEFI, DIANA ABUARJA, PRAJAKTA ANGRE AND VIJAYKUMAR V. MAHAJANIAbstract In this paper, efforts were made towards finding a suitable replacement for monoethanolamine (MEA) by investigating the oxidative degradation of various aqueous amines such as diethanolamine (DEA), triethanolamine (TEA), methyl diethanolamine (MDEA), ethylaminoethanol (EAE), and diethylaminoethanol (DEAE). A comparative oxidative degradation study was performed by using a high temperature high pressure subcritical reactor at 150oC by using an accelerated oxidative degradation approach. The results obtained indicate that aqueous EAE undergoes less % oxidative degradation as compared to other aqueous amines. Furthermore, the effect of addition of free radical scavenger (FRS) on oxidative degradation of aqueous EAE and formulated solvent [aqueous mixture of EAE and N-methyl-2-pyrolidone (NMP)] was also examined. The results obtained illustrate that carbonate salts of potassium are one of the promising FRS as it reduces the % oxidative degradation of both aqueous EAE and formulated solvent significantly.
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