Nanoparticles of Transition Metals as Accelerants in the Thermal Decomposition of Ammonium Perchlorate, Part 62

Autor:	Shalini Dubey, Samiran Sengupta, Supriya Singh, Reena Dubey, Gurdip Singh, I. P. S. Kapoor
Rok vydání:	2013
Předmět:	Thermogravimetry chemistry.chemical_compound Accelerant Differential scanning calorimetry Materials science Physics and Astronomy (miscellaneous) Transition metal chemistry Inorganic chemistry Thermal decomposition Activation energy Ammonium perchlorate Ethylene glycol
Zdroj:	Journal of Energetic Materials. 31:165-177
ISSN:	1545-8822 0737-0652
DOI:	10.1080/07370652.2012.656181
Popis:	Four transition metal nanoparticles (TMNs) of 3d series (Cu, Co, Ni, and Fe) were prepared by hydrazine reduction of metal chloride in ethylene glycol at 60°C and characterized by X-ray diffraction (XRD). The XRD pattern showed average particle sizes for Cu, Ni, Co, and Fe of 16.7, 40.5, 27.4, and 35.0 nm, respectively. The activity of these TMN accelerants on the thermal decomposition of ammonium perchlorate (AP) was investigated using thermogravimetry (TG), differential scanning calorimetry (DSC), and ignition delay studies. Isothermal TG data were used to evaluate the kinetic parameters by model fitting as well as an isoconversional methods. The activation energy for thermal decomposition of AP was found to be 66.8, 68.7, 78.5, and 85.4 kJmol−1, respectively, for Co, Cu, Ni, and Fe, when they were mixed with AP. Hence, the order of activity was found to be Co > Cu > Ni > Fe. The accelerant effect of nanoparticles of TMNs was found to be better than their respective nano-oxides.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d8d631fc015a5d6992537ba3b039e837 https://doi.org/10.1080/07370652.2012.656181 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.