3-硝基-1,3,4-三唑-5-酮金属(Li,Na, Pb,Cu)盐的制备反应热动力学

在常压、298.15 K条件下, 用RD496-2000微量热仪开展了3-硝基-1,3,4-三唑-5-酮(NTO)金属(Li, Na,Pb, Cu)盐制备反应的热动力学研究, 得到了反应过程中的热力学参数(活化焓、活化熵和活化自由能), 速率常数和动力学参数(活化能、指前因子和反应级数), 还得到了在25-40℃范围内NTO金属(Li, Na, Pb, Cu)盐制备反应过程的反应焓. 结果表明, NTO金属(Li, Na, Pb, Cu)盐的制备反应较容易发生. 基于Hess定律, 得到了Δ_fH_m⁰ (Li(NTO)·2H₂O, aq, 298.15 K)和Δ_fH_m⁰ (Na(NTO)·H₂O, aq, 298.15 K)的值.

Thermokinetics of the Formation Reactions of Metal (Li,Na, Pb,Cu) Salts of 3-Nitro-1,2,4-triazol-5-one

The thermokinetics of the formation reactions of metal (Li, Na, Pb, Cu) salts of 3-nitro-1,2,4-triazol- 5-one (NTO) was studied using a microcalorimeter. On the basis of experimental and calculated results, three thermodynamic parameters (activation energy, pre-exponential constant, and reaction order), rate constant, three thermokinetic parameters (activation enthalpy, activation entropy, and activation free energy) and the enthalpies of the reactions to prepare the metal salts of NTO in the temperature range of 25-40℃ were obtained. The title reactions occur easily in the studied temperature range. Based on Hess' law, the values of Δ_fH_m⁰ (Li(NTO)·2H₂O, aq, 298.15 K) and Δ_fH_m⁰ (Na(NTO)·2H₂O, aq, 298.15 K) are obtained.