Reversible absorption of SO2 with alkyl-anilines: The effects of alkyl-anilines: The effects of alkyl group on aniline and water
- Reversible absorption of SO2 with alkyl-anilines: The effects of alkyl-anilines: The effects of alkyl group on aniline and water
- 김홍곤; 이현주; 이웅; 조신혜; Huyen Thanh Vo; 제정호
- Issue Date
- Journal of industrial and engineering chemistry
- VOL 69-344
- SO2 absorption behaviours of N,N-dimethylaniline (DMA), N,N-diethylaniline (DEA), N,N-dibutylaniline (DBA), and N-methyldiphenylamine (MDPA) — were investigated in dry and wet conditions. DMA showed the highest SO2 absorption capacity of 1.5 molSO2 molAbsorbent− 1 in dry condition, while DBA showed the highest capacity of 1.75 molSO2 molAbsorbent− 1 in wet condition. Raman analyses revealed that anilines captured SO2 by forming charge transfer complexes in dry condition and the interaction between SO2 and aniline decreased as the steric hindrance of alkyl aniline increased. In contrast, bisulfite-based acid-base salt was formed in the presence of water, and the capacity increased with an increasing basicity of the alkyl aniline.
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