A new instrument for simply and rapidly determining an ammonia concentration in a gaseous mixture has been developed. The principle is based on the fact that ammonia reacts with NO exactly at 1:1 mole ratio in the presence of an appropriate catalyst: NH3+NO+ 1/4 O2=N2+ (3)/(2) H2O. A sample gas containing NH3 is mixed with NO and made to contact with a catalyst capable of promoting reaction of NH3 and NO to form N2 and H2O in an oxidative atmosphere at an elevated temperature, preferably, 300°–400 °C. The catalyst capable of conducting the reaction is composed of TiO2 and at least one of the oxides of V, Fe, Cu, W, Mo. The concentration of NH3 is determined by measuring concentrations of NO before and after the reaction and calculating the consumption of NO. For the analysis of NO in the gas, a chemiluminescence‐type analyzer can be preferably used. According to the present method, ammonia in a sample gas can be analyzed within a few minutes without any influence of various coexisting gas components.
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机译：已经开发出一种用于简单快速地确定气体混合物中氨浓度的新仪器。该原理基于以下事实：在合适的催化剂：NH3 + NO + 1/4 O2 = N2 +（3）/（2）H2O的存在下，氨与NO恰好以1：1的摩尔比反应。将含有NH3的样气与NO混合，并使其与能够促进NH3与NO反应生成N2和H2O的催化剂接触，该氧化气氛是在高温，优选300°-400°C的氧化气氛中进行的。能够进行反应的催化剂由TiO2和V，Fe，Cu，W，Mo的至少一种氧化物组成。NH3的浓度通过测量反应前后的NO浓度并计算其消耗量来确定。没有。为了分析气体中的NO，最好使用化学发光分析仪。根据本方法，可以在几分钟内分析样气中的氨，而不受各种共存气体成分的影响。
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