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以环己醇为吸收剂，吸收处理硝酸氧化环己醇制备己二酸过程中的ＮＯ＿ｘ废气，吸收率达９９％以上。ＧＣ－ＭＳ研究表明，在吸收过程中，环己醇得到初步氧化生成一系列中间产物，其主要成份为环己酮、亚硝酸环己酯和硝酸环己酯。这些中间产物继续用硝酸氧化，同样生成己二酸。并且可以节省硝酸１０％～１８％。
With cyclohexanol as absorbent, the NO_x exhaust gas in the process of preparing adipic acid by oxidation and oxidation of cyclohexanol with nitric acid is absorbed and the absorption rate is over 99%. GC-MS studies show that during the absorption process, cyclohexanol was initially oxidized to produce a series of intermediates, its main components are cyclohexanone, cyclohexyl nitrite and cyclohexyl nitrate. These intermediates continue to be oxidized with nitric acid, also producing adipic acid. And can save nitric acid 10% ~ 18%.