Dissolution properties of hexanitrohexaazaisowurtzitane (CL-20) in ethyl acetate and acetone |
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Authors: | Xing Xiaoling Xue Liang Zhao Fengqi Yi Jianhua Gao Hongxu Xu Siyu Pei Qing Hao Haixia Hu Rongzu |
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Institution: | (1) Propellant and Explosive Combustion Key Lab of Science and Technology for National Defence, Xi’an Modern Chemistry Research Institute, Xi’an, 710065, People’s Republic of China |
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Abstract: | The enthalpies of dissolution in ethyl acetate and acetone of hexanitrohexaazaisowurtzitane (CL-20) were measured by means
of a RD496-2000 Calvet microcalorimeter at 298.15 K, respectively. Empirical formulae for the calculation of the enthalpy
of dissolution (Δdiss
H), relative partial molar enthalpy (Δdiss
H
partial), relative apparent molar enthalpy (Δdiss
H
apparent), and the enthalpy of dilution (Δdil
H
1,2) of each process were obtained from the experimental data of the enthalpy of dissolution of CL-20. The corresponding kinetic
equations describing the two dissolution processes were
\frac\textda\textdt = 1.60 ×10 - 2 (1 - a)0.84 {\frac{{{\text{d}}\alpha }}{{{\text{d}}t}}} = 1.60 \times 10^{ - 2} (1 - \alpha )^{0.84} for dissolution process of CL-20 in ethyl acetate, and
\frac\textda\textdt = 2.15 ×10 - 2 (1 - a)0.89 {\frac{{{\text{d}}\alpha }}{{{\text{d}}t}}} = 2.15 \times 10^{ - 2} (1 - \alpha )^{0.89} for dissolution process of CL-20 in acetone. |
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Keywords: | |
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