Abstract: The mass transfer and reaction kinetics of the absorption of NO with aqueous ferrous cysteine solutions were studied in a double-stirred cell.The result indicated that the NO absorption with Fe(Ⅱ)(CyS)₂ was a fast pseudo-first-order reaction.The second-order rate constant was determined from experimental results and found to be 1.18×10⁵m³•mol^-1•s^-1 at pH 8.0 and 323 K.Three kinds of theoretical models were used in this mass transfer with chemical reaction process, and the same expression of enhancement factors was found.A comparison was made between the experimental enhancement factor and the data calculated from the models.The maximum relative deviation was less than 13%, which was reasonable in the research of gas-liquid reaction.

摘要： 以半胱氨酸亚铁络合物Fe(Ⅱ)(CyS)₂作为吸收剂，在双搅拌釜内探讨了NO吸收反应动力学.实验结果表明：在pH=8.0,T=323 K实验条件下，半胱氨酸亚铁溶液吸收NO气体为快速拟一级反应，得到二级反应速率常数k₂=1.18×10⁵ m³•mol^-1•s^-1.3种理论模型即膜模型、Danckwerts表面更新模型、Higbie渗透模型应用于该拟一级反应，增强因子的计算结果是相同的.实验获得的增强因子与模型计算值吻合较好，最大相对偏差不超过13％.