A new method is proposed to absorb the NOx into an organic compound,2-octanol.The absorption efficiency reaches up to 96-99%,and the NOx emission level is decreased from1.0×10~4-3.0×10~5 to 60-680Ppm.In the absorption process,2-octanol is preoxidized.And thenit is further oxidized into hexanoic acid with nitric acid.In this way,20% of nitric acid is savedfor the same yield of hexanoic acid.
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