论文部分内容阅读
应用Y_2O_3稳定的ZrO_2固体电解质电池:O_2(air),CO,Pt│YSZ│Pt,O_2(air),测量了410~500℃温度范围内的空气中微量CO浓度(51~819)×10~(-6)与电动势关系.响应电动势的灵敏度随温度增加而降低,至500℃渐趋于零.在一定温度下,测量电动势可随被测气体的流量(流速)增大而升高,归因于CO在Pt电极上脱附减小.500℃时含有51×10~(-6)CO的空气,在2L/min流量(相应流速54cm·s~(-1))下的测量电动势为18mV,响应时间≤30s.
The concentration of trace CO in the air at the temperature range of 410 ~ 500 ℃ (51 ~ 819) × 10 ~ (-1) was measured by using Y_2O_3-stabilized ZrO_2 solid electrolyte cells as O_2 (air), CO, Pt│YSZ│Pt and O_2 (-6) and electromotive force. The sensitivity of the electromotive force response decreases with increasing temperature, to 500 ℃ to zero. At a certain temperature, the measured electromotive force with the measured gas flow rate (flow rate) increases and returns Because of CO desorption on the Pt electrode decreases, the air containing 51 × 10 ~ (-6) CO at 500 ℃, the measured electromotive force at 2L / min (54cm · s ~ (-1)) is 18mV, response time ≤ 30s.