Photo-oxidation of two amines for use in CO2 capture: Experimental studies in the European Photo Reactor EUPHORE.
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The present study aimed at the identification and quantification of toxic compounds (nitrosamines and nitramines) resulting from the photochemical oxidation of the two amines (Amine-1 and Amine-2) for use in CO2 capture and the determination of their chemical production yields under various NOx mixing ratios in sunlit chamber experiments at the photo reactor facility EUPHORE in Valencia, Spain. Considering the uncertainties of the two applied nitramine measurement methods, the conversion yield of Amine-1-nitramine for low NOx conditions typical for Mongstad is estimated to range from 1.4% to 4.1%. The candidate for the first generation nitrosamine forming the photo-oxidation of Amine-1 (Amine-1-nitrosamine candidate) was identified by analysis of Thermosorb/N samples in the Amine-1 product yield experiments.