作者:G. Singh、D. K. Pandey
DOI:10.1007/s10973-005-0902-4
日期:2005.11
Bis(propylenediamine)metal perchlorate (BPMP) complexes like [M(pn)2](ClO4)2 (where M=Cr, Mn, Ni, Cu, Zn and pn=propylenediamine) have been prepared and characterized by gravimetric methods, infrared and elemental analysis. Thermal properties have been studied using simultaneous thermogravimetry-differential thermal analysis in atmospheres of nitrogen and air to examine the effect of atmospheric change on thermal decomposition of these complexes. Changing of the atmosphere does not cause any measurable changes in the decomposition of complexes. However, as indicated by thermoanalytical techniques, the thermal stability of present complexes decreases in the order: [Cr(pn)2](ClO4)2>[Mn(pn)2](ClO4)2>[Zn(pn)2](ClO4)2>[Ni(pn)2](ClO4)2>[Cu(pn)2](ClO4)2. Isothermal thermogravimetry, over the temperature range of decomposition has been done for all the complexes. An analysis of the kinetics of thermal decomposition was made using a model fitting procedure as well as an isoconversional method, independent of any model. The results of both kinetic approaches have been discussed critically. The explosion delay (DE) was measured to investigate the trend of rapid thermal analysis.
我们制备了双(丙二胺)金属高氯酸盐(BPMP)络合物,如 [M(pn)2](ClO4)2(其中 M=铬、锰、镍、铜、锌,pn=丙二胺),并通过重量法、红外分析和元素分析对其进行了表征。在氮气和空气气氛中,使用同步热重分析法和差热分析法对热特性进行了研究,以考察气氛变化对这些复合物热分解的影响。大气的变化不会对络合物的分解造成任何可测量的变化。不过,正如热分析技术所显示的那样,这些络合物的热稳定性依次降低:[对所有络合物在分解温度范围内进行了等温热重分析。使用模型拟合程序和等转换法对热分解动力学进行了分析,而不依赖于任何模型。对这两种动力学方法的结果进行了认真讨论。测量了爆炸延迟(DE),以研究快速热分析的趋势。