CHINA's Economic Growth and the Role of Criminal JUSTICE Agency: A Comparison Between Ministry of Public Security of the People’s Republic of CHINA and the National Police Agency of KOREA

Hogu, Kang; Wang, Linlin; Jo, Sunggu

doi:10.22471/law.2016.1.1.12

Cited by 1 publication

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“…Since then, many researchers have conducted research on the optimization of the HNS synthesis process, which has improved the yield and reduced the cost to a certain extent (Singh & Malhotra, 1983;Bird & Webb, 1980;Gilbert, 1980a;Salter et al, 1978;Singh & Singh, 1981). Wang & Qiu (1994), Lu (1992Lu ( , 1994 and Gilbert (1980b) studied the two-step process of HNS synthesis with hexanitrobibenzyl (HNBB) as an intermediate, which further improved the yield of HNS. The identification of HNS obtained from a process using TNT can be easily performed using infrared spectroscopy by means of the analytical band near 957 cm À1 , which is deformation by bending vibration of !CH CHtrans (Silva et al, 2010).…”

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confidence: 99%

The crystal structure and thermal decomposition kinetics of cis-hexanitrostilbene

Liu

Chen

Wang

et al. 2021

Acta Crystallogr Sect B

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Hexanitrostilbene (HNS) is an energetic material with wide application and excellent comprehensive performance. cis-HNS is successfully prepared using crude HNS with a purity of 95% as the raw material and N-methyl pyrrolidone (NMP) as the solvent. After separation and purification, acetone is used as a solvent to obtain light-yellow crystals at room temperature. The molecular structure of cis-HNS is determined through analysis of Fourier transform infrared, 13C NMR and 1H NMR spectroscopy and single-crystal X-ray diffraction data. The thermal decomposition properties of cis and trans-HNS are studied using differential scanning calorimetry (DSC). When the heating rate is low, cis-HNS will undergo a crystal transformation after melting, from liquid cis-HNS to liquid trans-HNS, and then it will solidify and release heat. According to the results of DSC data, the apparent kinetic parameters of thermal decomposition of cis- and trans-HNS were obtained by Kissinger method [Kissinger (1957). Anal. Chem. 29, 1702–1706] and Ozawa method [Ozawa (1965). Bull. Chem. Soc. Jpn. 38, 1881–1886], respectively. The spontaneous combustion temperature and self-accelerating decomposition temperature of cis and trans-HNS are calculated by the Zhang-Hu-Xie-Li method [Zhang et al. (1994). Thermochim. Acta, 244, 171–176].

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