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在150–210 oC,1.0 MPa氧分压条件下,对催化湿式共氧化法同时去除硝基苯和苯酚进行了研究.与无催化剂共氧化降解苯酚和硝基苯相比,均相催化剂的加入极大提高了苯酚和硝基苯的去除.在所研究的过渡金属催化剂中,Cu2+,Co2+和Ni2+是有效的催化剂,其中Cu2+的催化活性最好.引发剂苯酚的连续加入模式对硝基苯的去除有很大的促进作用,分批加入苯酚的促进作用更明显.在200 oC,以Cu2+为催化剂,苯酚分两次加入,反应1 h,硝基苯去除率达到95%.这种催化共氧化体系以及分批进样引发剂的反应模式对有效去除环境中其它有机污染物提供了一种方法.
Under the conditions of 150-210 oC and 1.0 MPa oxygen partial pressure, simultaneous removal of nitrobenzene and phenol by catalytic wet co-oxidation was studied. Compared with the co-oxidative degradation of phenol and nitrobenzene without catalyst, the addition of homogeneous catalyst Which greatly enhanced the removal of phenol and nitrobenzene.In the transition metal catalyst studied, Cu2 +, Co2 + and Ni2 + are effective catalysts, of which Cu2 + has the best catalytic activity.The continuous addition mode of the initiator phenol to p-nitrobenzene The removal efficiency of nitrobenzene was more obvious than that of phenol by adding batchwise addition of phenol.At 200 ° C, phenol was added in two steps with Cu2 + as catalyst, and the reaction rate reached 95% after 1 h reaction. The reaction mode of the co-oxidation system and the batch injection initiator provides a method for effectively removing other organic contaminants in the environment.