We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study on the dissolution behaviors of CL-20/TNT co-crystal in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO).
- Authors
Jia, Qian; Kou, Kai-chang; Zhang, Jiao-Qiang; Zhang, Shi-jie; Xu, Yun-long
- Abstract
2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20)/2,4,6-trinitrotoluene (TNT) co-crystal in 1:1 molar ratio was prepared by a solvent evaporation method, and the structural characterizations of CL-20/TNT co-crystal were systematically investigated by powder X-ray diffraction, Raman and differential scanning calorimeter. The dissolution behaviors of CL-20/TNT co-crystal in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) were investigated by a DC08-1 Calvet microcalorimeter at 298.15 K, showing that the dissolution processes were all exothermic. The heat effects (Q) of CL-20/TNT co-crystal dissolved in DMF and DMSO both increased with the increase of the amount of co-crystal. Empirical formulas for the calculation of the enthalpies of dissolution (ΔdissH), relative apparent molar enthalpies (ΔdissHapparent), relative partial molar enthalpies (ΔdissHpartial) were obtained from the experimental data of CL-20/TNT co-crystal dissolved in DMF and DMSO. It was found that the values of ΔdissH, ΔdissHapparent and ΔdissHpartial were affected by the molality of co-crystal (b). The kinetic equations describing the dissolution of CL-20/TNT co-crystal in DMF and DMSO at 298.15 K are dα/dt=10-2.391-α0.89 and dα/dt=10-2.471-α0.62, respectively.
- Subjects
DISSOLUTION (Chemistry); DIMETHYL sulfoxide; DIMETHYLFORMAMIDE; EVAPORATION (Chemistry); ENTHALPY
- Publication
Journal of Thermal Analysis & Calorimetry, 2018, Vol 134, Issue 3, p2375
- ISSN
1388-6150
- Publication type
Academic Journal
- DOI
10.1007/s10973-018-7832-4