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利用激光闪光光解技术研究了水相中氮气饱和条件下CS_2与·OH反应的机理.瞬态吸收光谱的解析以及阳离子猝灭实验,结果表明:水相中CS_2与·OH反应生成了·CS_2OH加合物,而不是CS_2~+;当1≤pH<5时,·CS_2OH会继续分解生成COS和·HS,而当pH>5时,·CS_2OH会与OH?反应生成CS_2O~-.同时还研究了温度对水相CS_2+·OH~k→·CS_2OH反应的影响,得到该反应活化能为(26.9±1.0)kJ·mol~(-1).
The mechanism of reaction between CS_2 and · OH in aqueous phase under nitrogen saturation condition was studied by laser flash photolysis technique. The transient absorption spectra and cation quenching experiments showed that the reaction between CS_2 and · OH in the aqueous phase resulted in the formation of · CS_2OH Adduct instead of CS_2 ~ +. When 1≤pH <5, CS_2OH will continue to decompose to form COS and · HS, while when pH> 5, · CS_2OH will react with OH · to produce CS_2O ~ - The effect of temperature on the reaction of CS_2 + · OH ~ k → CS_2OH was studied. The activation energy of the reaction was (26.9 ± 1.0) kJ · mol -1.