摘要
NO已被证明是血管舒张因子，临床上用来治疗急性呼吸衰竭，医疗要求的NO体积分数一般为5×10^-6～20×10^-6。在干燥空气中进行脉冲放电可以产生满足临床要求的NO，但同时也会产生对人体有很大伤害的NOz。因此，必须把NO2的体积分数降低到满足临床要求的〈3×10^-6，V（NO2）：V（NOx）〈5％。利用钼丝在一定的温度下将NO2转化为NO，在350～500℃时NO2转化率为30％～60％。研究了温度和钼丝直径对催化反应效率的影响，并对催化反应器设计和反应机理进行了探讨。
Inhaled nitric oxide （INO） has been identified as the endothelium-derived relaxing factor （EDRF）, used to treat acute respiratory distress syndrome （ARDF） for clinical applications, Usually, the concentration of NO for medical treatment is 5×10^-6 ～20×10^-6, NO for medical applications can be generated by pulsed arc discharge in fresh air. However, nitrogen dioxide （NO2） , as a byprod- uct, is also generated, which is harmful even at very low concentration. In clinical applications, concentration of NO2 must be less than 3×10^-6 and V（NO2） ： V（NOx） be less than 5%. In this paper, NO2 was converted to NO with molybdenum（Mo） wires. Results showed that NO2 conversion increased from 30% to 60% when temperature was raised from 350℃ to 500℃ .The influence of temperature and diameter of Mo wires was investigated and design of the reactor and reaction mechanism discussed.
出处
《工业催化》
CAS
2006年第8期51-54,共4页
Industrial Catalysis
基金
国家自然科学基金项目(50347009)
国家科技攻关项目(2003A12)
关键词
医用NO
NO2
钼丝
催化还原
反应机理
inhaled nitric oxide（INO）
nitrogen dioxide
catalytic reduction
molybdenum wire
reaction mechanism
