Catalytic Degradation of Energetic Explosives over Nickel oxide

• Main Authors: Ho, Kuan-Fu, 何寬甫
• Other Authors: Wang, Chen-Bin
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/61606102460455544749

碩士 === 國防大學中正理工學院 === 應用化學碩士班 === 99 === Treatment of the overdue fire explosives includes buried and burning techniques in the past. While, these methods are dangerous, even have been induced environmental pollutants and carcinogenesis toxicity. Based on the environmental protection, recyclization of the waste military propellants and explosives can obtain good social and economic effect. In this thesis, we also attempted to combine the ultrasonic technology with the high valence state of nickle oxidec (NiOx) and supported nickle catalysts that was used on the degradation of explosives. The prepared catalysts were characterized by powder X-ray diffraction (XRD), infrared spectroscopy (IR), thermogravimetry (TG), temperature programmed reduction (TPR), scanning electron microscope (SEM) and nitrogen adsorption-desorption isotherms (BET). In order to understand the particle size, composition, reduction behavior, thermal stability and surface area of prepared catalysts. The project is expected to combine both the ultrasonic-enhanced and catalysis techniques to degrade the waste military propellants and explosives (Hexogen, Trinitrotoluene). The quantitative measurement evaluated by the HPLC instruments. Also, the effects of initial temperature, pH, dosage of catalyst, and kinds of catalysts and the reaction system on the efficiency of the degradation have been investigated. The results show that the high valence state of nickle oxide (Ni3+) on the un-supported nickle catalysts possess the better activity than the Ni2+ species. Whereas, the high surface area (SiO2 and MCM41) and release oxygen (CeO2) supports can enhance the degradation activity under the ultrasonic-assisted over supported nickle catalysts.