摘要
文章合成了N-甲氧酰基-N′-氨基嘧啶硫脲,通过X-射线单晶结构分析法测定该化合物的分子结构和晶体结构。采用DSC,TG/DTG方法研究了化合物的热分解机理,并用5种积分法和1种微分法对其进行了非等温动力学研究。结果表明:化合物为三斜系,空间群为P-1。热分解机理为随机成核和随后生长机理,热分解反应的表观活化能为142.350 kJ/mol,指前因子为1014.19s-1,给出了反应动力学方程。
The compound N-（pyrimidin-2-yl）-N′-methoxycarbonyl-thiourea was synthesized.The molecular and the single crystal structure of the compound were determined by an X-ray diffractometer.The non-isothermal decomposition mechanism was investigated by DSC,TG/DTG techniques,and the kinetics of which was studied by means of five integral methods and one differential method.The results show that the crystal belongs to triclinic system with space group P-1.The thermal decomposition mechanism of the title compound accords with the randomly nucleating and nucleus growth model,and the apparent activated energy Ea=142.350 kJ/mol,pre-exponential factor A=1014.19 s-1.The kinetic equation was presented.
出处
《化学工程》
CAS
CSCD
北大核心
2011年第2期96-98,共3页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(20571060)
陕西省自然科学基金资助项目(2007B08)
西安科技计划项目资助(YF07106)
关键词
硫脲化合物
合成
晶体结构
非等温热分解动力学
thiourea compound
synthesis
crystal structure
non-isothermal decomposition kinetics
