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利用二硝酰胺铵(ADN)和盐酸胍在水溶液中合成了二硝酰胺胍([(NH2)2C NH2]+N(NO2)2-,GDN),首次培养出了用于X射线衍射的无色透明单晶。GDN属三斜晶系,空间群为P-1,晶体结构参数为:a=0.8332(5)nm,b=0.9306(6)nm,c=0.9878(6)nm,α=84.659(11)°,β=69.213(12)°,γ=67.451(12)°,V=0.6605(7)nm3,Z=4,μ=0.159 mm-1,F(000)=344,Dcalc=1.671 g.cm-3。通过DSC和TG/DTG法研究了GDN的热行为,其中第三阶段为强烈的放热分解过程,分解反应的表观活化能和指前因子分别为118.75 kJ.mol-1和1010.86s-1。GDN热爆炸的临界温度为164.09℃。GDN比ADN有更好的热稳定性。
Ammonium dinitramide ([(NH2) 2C NH2] + N (NO2) 2-, GDN was synthesized in aqueous solution using ammonium dinitramide (ADN) and guanidine hydrochloride. Color transparent single crystal. GDN is a triclinic system with space group P-1. The crystal structure parameters are as follows: a = 0.8332 (5) nm, b = 0.9306 (6) nm, c = 0.9878 , β = 69.213 (12) °, γ = 67.451 (12) °, V = 0.6605 (7) nm3, Z = 4, μ = 0.159 mm- 1, F (000) = 344, Dcalc = 1.671 g.cm- 3. The thermal behavior of GDN was studied by DSC and TG / DTG methods. The third stage was a strong exothermic decomposition process. The apparent activation energy and pre-exponential factor of the decomposition reaction were 118.75 kJ · mol-1 and 1010.86s-1 . The critical temperature of GDN thermal explosion is 164.09 ℃. GDN has better thermal stability than ADN.