scholarly journals Facile preparation of rGO/MFe2O4(M = Cu, Co, Ni) nanohybrids and its catalytic performance during the thermal decomposition of ammonium perchlorate

RSC Advances ◽  
2018 ◽  
Vol 8 (56) ◽  
pp. 32221-32230 ◽  
Author(s):  
Weiran Wang ◽  
Dongxiang Zhang
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Ammonium Perchlorate ◽  
Catalytic Performance ◽  
Decomposition Process ◽  
Thermal Decomposition Process ◽  
Facile Preparation

The rGO/MFe2O4(M = Cu, Co, Ni) nanohybrids show amazing catalytic activity in the thermal decomposition process of AP.

Freestanding CuS nanowalls: ionic liquid-assisted synthesis and prominent catalytic performance for the decomposition of ammonium perchlorate

CrystEngComm ◽  
2017 ◽  
Vol 19 (34) ◽  
pp. 5048-5057 ◽  
Author(s):  
Kaisheng Yao ◽  
Chenchen Zhao ◽  
Nannan Sun ◽  
Weiwei Lu ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ammonium Perchlorate ◽  
Catalytic Performance ◽  
Liquid Interface

Freestanding CuS nanowalls, with excellent catalytic activity for AP thermal decomposition, were grown and assembled at the [C10mim]Br-modulated liquid–liquid interface.

scholarly journals Preparation of Co Nanocrystallites by Solvothermal Process and Its Catalytic Activity on the Thermal Decomposition of Ammonium Perchlorate

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Shusen Zhao ◽  
Dongxu Ma
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Ammonium Perchlorate ◽  
Catalytic Performance ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Polyol Medium ◽  
Decomposition Behavior

Nanometer cobalt ferrite (Co) was synthesized by polyol-medium solvothermal method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). Further, the catalytic activity and kinetic parameters of Co nanocrystallites on the thermal decomposition behavior of ammonium perchlorate (AP) have been investigated by thermogravimetry and differential scanning calorimetry analysis (TG-DSC). The results imply that the catalytic performance of Co nanocrystallites is significant and the decrease in the activation energy and the increase in the rate constant for AP further confirm the enhancement in catalytic activity of Co nanocrystallites. A mechanism based on an proton transfer process has also been proposed for AP in the presence of Co nanocrystallites.

Catalytic Thermal Decomposition of Ammonium Perchlorate Using Cu/Cr Hydrotalcite Derived Nanocomposite Oxides

2012 ◽  
Vol 535-537 ◽  
pp. 275-279 ◽  
Author(s):  
Hong Bo Liu ◽  
Bing Zhi Guo ◽  
Zhi Yong Huang ◽  
Hong Hui Xu ◽  
Chu Yang Fang ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
Differential Thermal Analysis ◽  
Ammonium Perchlorate ◽  
Catalytic Mechanism ◽  
Decomposition Process ◽  
Mechanical Mixture ◽  
Thermal Decomposition Process ◽  
Catalytic Activities ◽  
Catalytic Thermal Decomposition

A series of Cu/Cr nanocomposite oxides (Cu/Cr–NCOs) were prepared by Cu/Cr hydrotalcite precursors. Their catalytic activities on thermal decomposition of ammonium perchlorate (AP) were investigated by differential thermal analysis (DTA). The results show that Cu/Cr–NCOs are efficient in enhancing thermal decomposition of AP. With 4 wt. % addition of 500 °C calcined Cu2Cr–NCOs, the thermal decomposition process of AP can be accelerated by 107 °C. Cu/Cr–NCOs catalysts have better effect compared to mechanical mixture of CuO and Cr2O3 catalyst. Their catalytic mechanism was also discussed.

Synthesis of Nitrogen-Doped ZnO Nanocrystallites and its Novel Catalytic Activity on Ammonium Perchlorate

2011 ◽  
Vol 236-238 ◽  
pp. 1665-1669
Author(s):  
Min Zheng ◽  
Zuo Shan Wang ◽  
Qing Wang
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Ammonium Perchlorate ◽  
Photoelectron Spectroscopy ◽  
Catalytic Performance ◽  
Nitrogen Doped ◽  
Nitrogen Incorporation ◽  
One Step ◽  
Doped Zno ◽  
Zno Crystal

Nitrogen-doped zinc oxide (N-doped ZnO) nanocrystallites were synthesized via improved one-step combustion technique by using citric acid as additive. Scan electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were used to determine the grain size, shape, degree of nitrogen incorporation and nature of the resultant oxynitride chemical bonding. The catalytic performance of N-doped ZnO on the thermal decomposition of ammonium perchlorate (AP) was investigated by DSC-TG technique. The results show that the as-synthesized N-doped ZnO has uniform crystallite size about 20-30nm in diameter and 1.25%wt nitrogen incorporation, which forms into NO bonding region in ZnO crystal lattice. The nitrogen doping is accountable for the significant increase in catalytic activity on the thermal decomposition of AP versus the commercial nanometer ZnO and the thermal decomposition peak shifts 133°C downward when the content of N-doped ZnO in AP is 3%wt.

scholarly journals Thermal behavior and decomposition kinetics of rifampicin polymorphs under isothermal and non-isothermal conditions

2010 ◽  
Vol 46 (2) ◽  
pp. 343-351 ◽  
Author(s):  
Ricardo Alves ◽  
Thaís Vitória da Silva Reis ◽  
Luis Carlos Cides da Silva ◽  
Silvia Storpírtis ◽  
Lucildes Pita Mercuri ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Thermal Behavior ◽  
Melting Process ◽  
Decomposition Process ◽  
Stable Form ◽  
Thermal Decomposition Process ◽  
Mean Values ◽  
Conversion Level ◽  
Polymorphic Forms ◽  
Crystalline Forms

The thermal behavior of two polymorphic forms of rifampicin was studied by DSC and TG/DTG. The thermoanalytical results clearly showed the differences between the two crystalline forms. Polymorph I was the most thermally stable form, the DSC curve showed no fusion for this species and the thermal decomposition process occurred around 245 ºC. The DSC curve of polymorph II showed two consecutive events, an endothermic event (Tpeak = 193.9 ºC) and one exothermic event (Tpeak = 209.4 ºC), due to a melting process followed by recrystallization, which was attributed to the conversion of form II to form I. Isothermal and non-isothermal thermogravimetric methods were used to determine the kinetic parameters of the thermal decomposition process. For non-isothermal experiments, the activation energy (Ea) was derived from the plot of Log β vs 1/T, yielding values for polymorph form I and II of 154 and 123 kJ mol-1, respectively. In the isothermal experiments, the Ea was obtained from the plot of lnt vs 1/T at a constant conversion level. The mean values found for form I and form II were 137 and 144 kJ mol-1, respectively.

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