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选取1,2,4-三氯苯作为氯代有机物的模型化合物,利用气相色谱、气相色谱-质谱联用仪等实验手段,研究了纳米Co3O4催化降解1,2,4-三氯苯的影响因素及效果。获得的主要研究结果有:纳米Co3O4对1,2,4-三氯苯具有较高的催化降解活性,200 mg纳米Co3O4与1.5μL 1,2,4-三氯苯在300℃下反应60 min,对1,2,4-三氯苯的降解效率可接近100%。1,2,4-三氯苯在纳米Co3O4表面上的降解主要是逐级加氢脱氯,其中,1,2,4-三氯苯经过一级脱氯得到对二氯苯,然后对二氯苯再经过二级脱氯得到一氯苯是加氢脱氯的主要途径。
1,2,4-trichlorobenzene was selected as a model compound for chlorinated organic compounds. The effects of the catalytic degradation of 1,2,4-trichlorobenzene by nano-Co3O4 were investigated by gas chromatography, gas chromatography-mass spectrometry and other experimental methods. Factors and effects. The main results obtained are as follows: nano-Co3O4 has high catalytic activity on 1,2,4-trichlorobenzene, and 200 mg nano-Co3O4 reacted with 1.5μL 1,2,4-trichlorobenzene at 300 ℃ for 60 min , 1,2,4-trichlorobenzene degradation efficiency can be close to 100%. The degradation of 1,2,4-trichlorobenzene on the surface of nanocrystalline Co3O4 is mainly stepwise hydrodechlorination, in which 1,2,4-trichlorobenzene is dechlorinated by primary dechlorination to give p-dichlorobenzene, Chlorobenzene and then through the secondary dechlorination of chlorobenzene is the main way of hydrodechlorination.