Effect of nano-copper oxide and copper chromite on the thermal decomposition of ammonium perchlorate
Effect of nano-copper oxide and copper chromite on the thermal decomposition of ammonium perchlorate
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DOI：
10.1002/prep.200700242
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发表时间：
2008-08-01
影响因子：
1.8
通讯作者：
Joshi, Satyawati S.
中科院分区：
文献类型：
--
作者：
Patil, Prajakta R.;Krishnamurthy, V. N.;Joshi, Satyawati S.
采用差示扫描量热法研究了电化学法制备的p型纳米CuO和CuCr 2 O 4对高氯酸铵（AP）热分解的催化作用。纳米亚铬酸铜（CuCr 2 O 4）显示出最好的催化效果相比，纳米氧化铜（CuO）在降低118摄氏度的高温分解在2重量%。在纳米CuO和CuCr_2O_4的存在下，分别观察到5.430和3.921 kJ g（-1）的高放热。用Kissinger法计算了动力学参数。活化能的降低和速率常数的增加证实了AP的催化活性的增强。还提出了一种基于电子转移过程的机制，在纳米金属氧化物的存在下，AP。
The catalytic effect om the thermal decomposition behavior of ammonium perchlorate (AP) of p-type nano-CuO and CuCr2O4, synthesized by an electrochemical method has been investigated using differential scanning calorimetry as a function of catalyst concentration. The nano-copper chromite (CuCr2O4) showed best catalytic effects as compared to nano-cupric oxide (CuO) in lowering the high temperature decomposition by 118 degrees C at 2 wt.-%. High heat releases of 5.430 and 3.921 kJ g(-1) were observed in the presence of nano-CuO and CuCr2O4, respectively. The kinetic parameters Were evaluated using the Kissinger method. The decrease in the activation energy and the increase in the rate constant for both the oxides confirmed the enhancement in catalytic activity of AP. A mechanism based on an electron transfer process has also been proposed for AP in the presence of nano-metal oxides.