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以0.5%PdZrO_2/γ-Al_2O_3为催化剂,在所搭建的比例积分微分控制(PID)多功能实验装置上进行CO催化燃烧基础特性实验,分析了H_2O对CO转化率的影响,以及H_2O体积分数的变化对CO转化率和CO催化燃烧反应时间的影响.结果表明:H_2O的加入大幅提升了CO在催化剂上的起燃温度和燃尽温度,增大了CO催化燃烧反应所需的活化能,且随着H_2O体积分数的增大,CO起燃温度和燃尽温度逐步升高;CO转化率随H_2O体积分数的增加逐渐降低;CO反应稳定所需时间随H_2O体积分数的增大而增加;H_2O的存在降低了催化剂的活性,抑制了催化燃烧的进行.
The basic characteristics of CO catalytic combustion were experimentally investigated on a PID multi-functional experimental setup with 0.5% PdZrO 2 / γ-Al 2 O 3 as catalyst. The effects of H 2 O on CO conversion and H 2 O volume fraction The results showed that the addition of H 2 O significantly increased the ignition temperature and the burnout temperature of CO on the catalyst and increased the activation energy required for the CO catalytic combustion reaction With the increase of volume fraction of H 2 O, the ignition temperature of CO and the burnout temperature increased gradually. The CO conversion decreased with the increase of H 2 O volume fraction. The time required for the CO reaction to stabilize increased with the increase of H 2 O volume fraction. Reduces the activity of the catalyst and inhibits the catalytic combustion.