Synthesis of unsymmetrical dimethylhydrazine oxalate from rejected liquid rocket propellant

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Mu, Xiaogang^1 ; Yang, Jingjing^1 ; Zhang, Youzhi^1

Xi'An Research Institute of High Technology, Xi'an

710025, China^1

关键词: Disposal methods;    Environmentally safe;    Initial decomposition temperatures;    Liquid rockets;    Peak wavelength;    Solution stability;    Spectrophotometric analysis;    Unsymmetrical dimethylhydrazine;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/2/022008/pdf
DOI  :  10.1088/1755-1315/121/2/022008

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The rejected liquid propellant unsymmetrical dimethylhydrazine (UDMH) was converted to UDMH oxalate, which has commercial value. The UDMH oxalate structure and stability were investigated by the Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, differential scanning calorimetry, and ultraviolet-visible spectrophotometric analysis. The results indicate that UDMH oxalate has good thermal and aqueous solution stability, a melting point of 144 °C, an initial decomposition temperature of 180 °C, and a peak wavelength of UV in aqueous solution at λ = 204 nm. This disposal method of rejected UDMH is highly efficient and environmentally safe.