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利用常压管式流动反应装置研究CO/H2/O2/Cl2的氧化过程以了解氯对CO氧化的抑制作用。实验中反应温度的范围是973～1273K,入口反应气体中氯原子和氢原子的物质的量之比[Cl]/[H]的范围是0到1。反应产物通过红外光谱仪在线检测。结果表明,CO的转化率随反应温度的升高而增大,随[Cl]/[H]的升高而减小。HCl的生成反应及HCl与OH的反应HCl+OH=Cl+H2O降低了反应体系中OH的浓度,导致CO转化率的下降。提高反应温度可减轻氯对CO氧化的抑制作用。
The oxidation process of CO / H2 / O2 / Cl2 was studied by atmospheric pressure tubular flow reactor to understand the inhibitory effect of chlorine on CO oxidation. In the experiment, the reaction temperature ranged from 973 to 1273 K, and the ratio [Cl] / [H] of the amount of chlorine atoms and hydrogen atoms in the inlet reaction gas was in the range of 0 to 1. The reaction product was detected online by infrared spectroscopy. The results showed that the conversion of CO increased with the increase of reaction temperature and decreased with the increase of [Cl] / [H]. The formation of HCl and the reaction of HCl with OH HCl + OH = Cl + H2O reduces the concentration of OH in the reaction system, resulting in the decrease of CO conversion. Increasing the reaction temperature can reduce the inhibitory effect of chlorine on CO oxidation.