Thermochemical properties of 2,6-diamino-3,5-dinitropyrazine-1-oxide in dimethyl sulfoxide and N-methyl pyrrolidone

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• 作者：Na Li ; Feng Qi Zhao ; Chun Lei Xuan…
• 关键词：2 ; 6 ; Diamino ; 3 ; 5 ; dinitropyrazine ; 1 ; oxide ; Microcalorimeter ; Dimethyl sulfoxide ; N ; Methyl pyrrolidone ; Dissolution ; Kinetics
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：127
• 期：3
• 页码：2511-2516
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Analytical Chemistry; Polymer Sciences; Inorganic Chemistry; Measurement Science and Instrumentation;
• 出版者：Springer Netherlands
• ISSN：1588-2926
• 卷排序：127

文摘

The molar enthalpies of dissolution for 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105) in dimethyl sulfoxide (DMSO) and N-methyl-2-pyrrolidone (NMP) were measured using a RD496-2000 Calvet microcalorimeter at 298.15 K under atmospheric pressure. Empirical formulae for the calculation of the molar enthalpies of dissolution (Δ_dissH), relative partial molar enthalpies (Δ_dissH_partial) and relative apparent molar enthalpies (Δ_dissH_apparent) were obtained from the experimental data of the dissolution processes of LLM-105 in DMSO or NMP. Furthermore, the corresponding kinetic equations describing the two dissolution processes were dα/dt = 10−2.37(1 − α)0.47 for the dissolution of LLM-105 in DMSO, and dα/dt = 10−2.38(1 − α)0.42 for the dissolution of LLM-105 in NMP.