NDLI: Investigation of catalytic activity of ZnAl$_{2}$O$_{4}$ and ZnMn$_{2}$O$_{4}$ nanoparticles in the thermal decomposition of ammonium perchlorate : Structural and kinetic studies

Content Provider	Springer Nature Link
Author	Juibari, Nafise Modanlou Eslami, Abbas
Copyright Year	2016
Abstract	ZnAl$_{2}$O$_{4}$ and ZnMn$_{2}$O$_{4}$ nanoparticles were synthesized by a modified co-precipitation method and characterized by means of Fourier transform infrared spectroscopy, X-ray diffraction, energy-dispersion X-ray spectrometer, and their morphology investigated by means of scanning electron microscopy. The effects of these nanoparticles on the thermal decomposition of ammonium perchlorate (AP) were examined by differential scanning calorimetery and thermogravimetery analyses. The results revealed that ZnAl$_{2}$O$_{4}$ nanoparticles have little catalytic effect on this process, but ZnMn$_{2}$O$_{4}$ nanoparticles have good catalytic effect on decreasing the decomposition temperature of AP and increasing the released heat. ZnAl$_{2}$O$_{4}$ and ZnMn$_{2}$O$_{4}$ nanoparticles increased the released heat of AP decomposition from 400 to about 736 and 1130 Jg$^{−1}$, respectively, and AP decomposition temperature decreased from 420 to 400 and 358 °C in the same order. The higher catalytic activity of ZnMn$_{2}$O$_{4}$ can be due to its p-type semiconductivity and the presence of some positive hole and defects. Also, the kinetic parameters such as pre-exponential factor and activation energy were calculated using Kissinger method.
Starting Page	115
Ending Page	124
Page Count	10
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	128
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-10-31
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Co-precipitation ZnAl$_{2}$O$_{4}$ and ZnMn$_{2}$O$_{4}$ nanoparticles Ammonium perchlorate Spinel Thermal decomposition Catalytic effect Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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