废水中偏二甲肼在Ni/Fe催化剂上的催化分解研究

研究了Ni/Fe催化剂对废水中偏二甲肼臭氧化分解的催化作用,考察了组分含量、体系的pH值和偏二甲肼初始浓度对催化反应的影响.结果表明,Ni/Fe催化剂对水中偏二甲肼的臭氧化具有良好的催化活性.催化剂组分含量、体系的pH值和初始浓度对反应的影响程度不大.对催化剂的XRD表征结果表明,催化剂主要由尖晶石结构的铁酸盐和FeNi3合金相组成,催化剂的良好催化性能与催化剂中尖晶石结构的铁酸盐和FeNi3合金相的形成有关.

Investigation of Catalytic Decomposition Unsymmetrical Dimethylhydrazine via Ozonation in Wastewater over Ni/Fe Catalysts

Catalytic decomposition of unsymmetrical dimethylhydrazine(UDMH) in wastewater on Ni/Fe catalysts was studied, and the effects of the content of the catalysts, pH values of the system and the initial concentration of UDMH were investigated. The results showed that the catalysts exhibited high activities for the ozonation of UDMH. The content of the catalysts, pH values of the system and the initial concentration of UDMH give little effects on the performance of the catalysts. The catalysts are characterized by X-ray diffraction(XRD) and the results showed that the main components of the catalysts were the spinal-type structure of magnetite and FeNi3 alloy. The high performance of the catalysts for the ozonation of UDMH may be resulted from the formation of the spinal-type structure of magnetite and the FeNi3 alloy.