羰基硫催化水解反应机理及动力学研究

对LS-05催化剂上羰基硫（COS）水解反应的机理及反应动力学进行了研究。考察了COS、H2S在LS-05催化剂上常温吸附、程序升温脱附及发生表面反应过程中反应物和产物的质谱信号强度变化，分析COS催化水解反应机理；同时，通过调变COS水解反应温度和反应物浓度，得到一系列反应动力学数据，进而建立相应的反应速率方程，分析COS在催化剂上的反应过程。结果表明：羰基硫水解反应符合Langmuir-Hinshelwood（L-H）机理，模型回归方程的决定系数R²=0.998，回归结果与试验数据的误差在10%以内，说明所建的动力学模型具有较高的相关性和准确性。

REACTION MECHANISM AND KINETICS OF CATALYTIC HYDROLYSIS CARBONYL SULFIDE

The reaction mechanism and kinetics of carbonyl sulfide (COS) hydrolysis on LS-05 catalyst were studied. The mass spectrum (MS) signal intensity changes of reactants and different products during the room-temperature adsorption, temperature programmed desorption and surface reaction of COS and H2S on the catalyst were investigated, and the mechanism of catalytic hydrolysis of COS was analyzed. By adjusting the reaction temperature and reactant concentration, a series of kinetic data were obtained, and then the corresponding reaction rate equation was established to analyze the reaction process of COS on the catalyst. The results showed that COS hydrolysis accorded with Langmuir- Hinshelwood (L-H) mechanism. The determination coefficient R² of the model regression equation was 0.998, and the error between the regression result and the experimental data was less than 10%，which indicated that the regression results of the model had a high correlation with the experimental data.