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Kinetics of Thermal Decomposition of Ammonium Perchlorate with Nanocrystals of Binary Transition Metal Ferrites
Author(s) -
Singh Gurdip,
Kapoor Inder Pal Singh,
Dubey Shalini,
Siril Prem Felix
Publication year - 2009
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.200900017
Subject(s) - ammonium perchlorate , thermogravimetry , coprecipitation , thermal decomposition , materials science , differential thermal analysis , isothermal process , catalysis , transition metal , ferrite (magnet) , nanocrystal , particle size , analytical chemistry (journal) , thermal analysis , chemistry , inorganic chemistry , diffraction , thermal , thermodynamics , organic chemistry , nanotechnology , composite material , physics , optics
Binary transition metal ferrite (BTMF) nanocrystals of formula MFe 2 O 4 (M=Cu, Co, Ni) were prepared by the coprecipitation method and characterized by X‐ray diffraction (XRD). XRD patterns gave average particle size by using Scherrer's equation for CuFe 2 O 4 (CuF), CoFe 2 O 4 (CoF), and NiFe 2 O 4 (NiF) as 39.9, 27.3, and 43.8 nm, respectively. The catalytic activity measurements on the thermal decomposition of ammonium perchlorate (AP) were carried out by using thermogravimetry (TG), differential thermal analysis (DTA), and ignition delay studies. Isothermal TG data up to a mass loss of 45% have been used to evaluate kinetic parameters by using model fitting as well as isoconversional method. The order of catalytic activity was found to be: