GAS-CHROMATOGRAPHIC ANALYSIS OF THE PRODUCTS OF CATALYTIC REDUCTION OF NITRIC-OXIDE BY AMMONIA

The behavior of small amounts of nitric oxide in the presence of ammon ia and excess oxygen on adsorbents of different textures was studied b y gas chromatography. A scheme for the gas chromatographic analyses of the products of catalytic reduction of nitric oxide by ammonia and th e catalytic oxidation of ammonia by oxygen was suggested. The scheme m akes it possible to prevent chemical reactions between components of t he gac mixture analyzed during the accumulation of the products and th eir analysis, to exclude the partial or complete adsorption of NO on m icroporous adsorbents, and to monitor the content of components at a l evel of 500 ppm and lower.