催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (1): 19-23.

• 研究论文 • 上一篇    下一篇

草酸钴原位催化高氯酸铵热分解的DSC/TG-MS研究

余宗学1,2,陈莉芬1,陆路德1,杨绪杰1,汪信1   

  1. 1 南京理工大学软化学与功能材料教育部重点实验室, 江苏南京 210094; 2 重庆三峡学院化工系, 重庆 404000
  • 收稿日期:2009-01-25 出版日期:2009-01-25 发布日期:2012-10-17

DSC/TG-MS Study on in Situ Catalytic Thermal Decomposition of Ammonium Perchl

YU Zongxue1,2, CHEN Lifen1, LU Lude1*, YANG Xujie1, WANG Xin1   

  1. 1 Key Laboratory of Educational Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China; 2 Department of Chemical Engineering, Chongqing Three Gorges College, Chongqing 404000, China
  • Received:2009-01-25 Online:2009-01-25 Published:2012-10-17

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摘要： 采用差示扫描量热/热分析-质谱(DSC/TG-MS)联用技术研究了草酸钴对高氯酸铵的原位催化. 结果表明,草酸钴原位分解生成的钴氧化物对高氯酸铵有较强的催化作用,添加2%的草酸钴使高氯酸铵的分解温度降低104 ℃, 分解放热量从655 J/g增大到1469J/g. 分解的气相产物主要有H2O, NH3, O2, HCl, Cl2, NO, N2O和NO2. 由于氧在新生态的纳米钴氧化物表面形成过氧化活性离子(O-2), 使氨氧化在钴氧化物的过氧化表面活性中心进行,加速了高氯酸铵的热分解,使其表观放热量大幅度增加.

关键词: 草酸钴, 原位催化, 高氯酸铵, 热分解, 差示扫描量热/热分析-质谱联用

Abstract: CoC2O4 shows intensive catalytic effect on the thermal decomposition of ammo nium perchlorate (AP). Adding 2% of CoC2O4 to AP decreases the decomposition tem pera ture by 104 ℃ and increases the heat of decomposition from 655 J/g to 1469 J/g. Products of thermal decomposition of AP are H2O , NH3 , O2, HCl , Cl2 , NO , N2O , and NO2. The results show that the new ecological nano-c obalt oxide presents better catalysis performance for thermal decomposition of A P.

Key words: cobalt oxalate, in situ catalysis, ammonium perchlorate, thermal decomposition, differential scanning calorimetry/thermogravimetry-mass spectrometry