含能材料2008，Vol.16Issue(5)：577-580,4.
二硝酰胺胍(GDN)的晶体结构和热行为
Crystal Structure and Thermal Behavior of GDN
摘要
Abstract
Guanidine dinitramide ([ (NH2)2CNH2 ]+N(NO2)2-, GDN) was prepared by mixing ammonium dinitramide (ADN) and guanidine hydrochloride in water, and its structure was firstly determined by single-crystal X-ray diffraction. The crystal is triclinic, space group P-1 with crystal parameters of 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, and Dcalc=1.671 g·cm-3. The thermal behavior of GDN was studied with DSC and TG/DTG methods, and its thermal decomposition process can be divided into four stages, and the third stage is an intense exothermic decomposition process. The apparent activation energy and pre-exponential constant of the exothermic decomposition reaction are 118.75 kJ·mol-1 and 1010.86 s-1, respectively. The critical temperature of thermal explosion is 164.09 ℃. GDN presents higher thermal stability than ammonium dinitramide (ADN).关键词
物理化学/二硝酰胺铵(ADN)/二硝酰胺胍(GDN)/晶体结构/热行为Key words
physical chemistry/ammonium dinitramide (ADN)/guanidine dinitramide (GDN)/crystal structure/thermal behavior分类
军事科技引用本文复制引用
徐抗震,赵凤起,丁黎,王晗,李梦,常春然,马海霞,宋纪蓉..二硝酰胺胍(GDN)的晶体结构和热行为[J].含能材料,2008,16(5):577-580,4.基金项目
Project Supported: the National Natural Science Foundation of China(No. 20603026) and Xi'an Scientific and Technical Plan Foundation(No.YF07106) （No. 20603026）
