| Thermal decomposition kinetics of antimony oxychloride in air |
| |
| 作者姓名： | 阳卫军 唐谟堂 金胜明 |
| |
| 作者单位： | [1]CollegeofChemistryandChemicalEngineering,CentralSouthUniversity,Changsha410083,China; [2]DepartmentofMetallurgicalScienceandEngineering,CentralSouthUniversity,Changsha410083,China |
| |
| 摘 要： | The DTA and XRD techniques were employed to study thermal decomposition mechanism of antimony oxychloride SbOCl in the air. The thermal decomposition reaction occurs in four steps, and the former three steps as: SbOCl (s)→Sb4O5Cl2(s) SbCl3(g)→Sb8O11Cl2(s) SbCl3 (g)→Sb2O3 (s) SbCl3(g). The forth step is the oxidation of Sb2O3 by air, Sb2O3(s) O2→Sb2O4(s). The activation energy and the order of the thermal decomposition reaction of antimony oxychloride in three steps presented in DTA curves were calculated according to Kinssinger methods from DTA curves The values of activation energy and the order are respectively 91.97kJ/mol, 0.73 in the first step,131.14 kJ/mol, 0.63 in the second step and 146.94 kJ/mol, 1.58 in the third steP.
|
| 关 键 词： | 氯氧化锑 热解 动力学 分解机理 DTA |
Thermal decomposition kinetics of antimony oxychloride in air |
| |
| Abstract: | The DTA and XRD techniques were employed to study thermal decomposition mechanism of antimony oxychloride SbOCl in the air. The thermal decomposition reaction occurs in four steps, and the former three steps as: SbOCl(s)→Sb4O5Cl2(s)+SbCl3(g)→Sb8O11Cl2(s)+SbCl3(g)→Sb2O3(s)+SbCl3(g). The forth step is the oxidation of Sb2O3 by air, Sb2O3(s)+O2→Sb2O4(s). The activation energy and the order of the thermal decomposition reaction of antimony oxychloride in three steps presented in DTA curves were calculated according to Kinssinger methods from DTA curves. The values of activation energy and the order are respectively 91.97kJ/mol, 0.73 in the first step, 131.14kJ/mol, 0.63 in the second step and 146.94kJ/mol, 1.58 in the third step. |
| |
| Keywords: | antimony oxychloride thermal decomposition kinetics |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
