摘要
应用ＤＴＡ／Ｔ／ＥＧＤ／ＧＣ在线联用技术，对倍半氧化羧乙基锗（Ｇｅ－１３２）在Ｎ２气氛中的热分解反应历程（室温～９８０℃）进行了研究。依据ＤＴＡ／Ｔ／ＥＧＤ／ＧＣ提供的信息，分别对２２０℃、３５０℃、６５０℃、８００℃、９００℃、９８０℃等反应温度下的热分解残物，应用ＸＲＤ仪进行了物相鉴定，并测定了Ｇｅ－１３２在Ｎ２气氛中（室温～９３０℃）的ＴＧ／ＤＴＧ曲线。对ＤＴＡ曲线上显示的五个吸热效应和一个放热效应的性质作出了判断和验证，并对该热分解反应中逸出气的组成演变、残物中的Ｇｅ和ＧｅＯ２晶相的析出以及ＧｅＯ２在高温下转化为Ｇｅ的反应历程进行了探讨。
By applying DTA/T/EGD/GC on line coupled simultaneous technique, the reaction mechanism (ambient temperature￣990℃) of the thermal decomposition of Ge 132 in N 2 atmosphere was studied. According to the information provided by the DTA/T/EGD/GC curves, the substance phase of the thermal decomposition residue at reaction temperature 220℃,350℃,650℃,820℃,900℃ and 980℃ were identified respectively by using the X ray diffractometer. TG/DTG curves of Ge 132 was detected from ambient temperature to 930℃ in N 2 atmosphere. By analyzing the above information and data, the characteristic of five endothermal effects and one exothermal effect presented on the DTA curve is determined and verified. The variaton of composition of the reaction evolved gas produced by thermal decomposition reaction of Ge 132 at N 2 atmosphere, as well as the crystal releasing of Ge and GeO 2, and the reaction mechanism of transformed GeO 2 to Ge in the high temperature are discussed.
出处
《华东理工大学学报（自然科学版）》
CSCD
北大核心
1997年第1期114-120,共7页
Journal of East China University of Science and Technology
基金
国家自然科学基金
关键词
差热分析
逸出气检测
气相色谱
锗有机化合物
carboxyethylgermanium sesquioxide
organic germanium (Ge 132)
differential thermal analysis(DTA)
evolved gas detector(EGD)
gas chromatography(GC)
on line coupled simultaneous technique
