Energy and Environmental Research Laboratory, Department of Chemistry, Indian Institute of Technology, Hyderabad 502205, India.
J Hazard Mater. 2012 Oct 30;237-238:283-9. doi: 10.1016/j.jhazmat.2012.08.040. Epub 2012 Aug 24.
Total oxidation of mixture of dilute volatile organic compounds was carried out in a dielectric barrier discharge reactor with various transition metal oxide catalysts integrated in-plasma. The experimental results indicated the best removal efficiencies in the presence of metal oxide catalysts, especially MnO(x), whose activity was further improved with AgO(x) deposition. It was confirmed water vapor improves the efficiency of the plasma reactor, probably due to the formation of hydroxyl species, whereas, in situ decomposition of ozone on the catalyst surface may lead to nascent oxygen. It may be concluded that non-thermal plasma approach is beneficial for the removal of mixture of volatile organic compounds than individual VOCs, probably due to the formation of reactive intermediates like aldehydes, peroxides, etc.
在介质阻挡放电反应器中，采用各种过渡金属氧化物催化剂进行了稀挥发性有机化合物混合物的完全氧化。实验结果表明，在金属氧化物催化剂的存在下，特别是 MnO(x)，具有最佳的去除效率，而在 AgO(x) 沉积的情况下，其活性进一步提高。已经证实水蒸气可以提高等离子体反应器的效率，这可能是由于羟基物质的形成，而臭氧在催化剂表面的原位分解可能导致新生氧的形成。可以得出结论，与单一 VOC 相比，非热等离子体方法更有利于挥发性有机化合物混合物的去除，这可能是由于形成了像醛、过氧化物等反应性中间体。
