The catalytic behaviour of NiFe2-xCrxO4 (0.0 <= x <= 2.0) during the thermal decomposition of ammonium perchlorate, polystyrene and their composite propellants

Authors
Dubey, BL Singh, NB Srivastava, JN Ojha, AK
Citation
Bl. Dubey et al., The catalytic behaviour of NiFe2-xCrxO4 (0.0 <= x <= 2.0) during the thermal decomposition of ammonium perchlorate, polystyrene and their composite propellants, I J CHEM A, 40(8), 2001, pp. 841-847
Citations number
7
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
8
Year of publication
2001
Pages
841 - 847
Database
ISI
SICI code
0376-4710(200108)40:8<841:TCBON(>2.0.ZU;2-U
Abstract
NiFe2O4, NiFeCrO4 and NiCr2O4 catalysts have been prepared by solid state r eaction and characterised by using chemical analysis and X-ray diffraction techniques. Electrical conductivity and thermoelectric power measurements h ave shown that the catalysts are p-type semiconductors. The thermal decompo sition of ammonium perchlorate, polystyrene and a composite propellant of a mmonium perchlorate and polystyrene has been studied in the presence of the se catalysts using thermogravimetric analyser. The effectiveness of the cat alysts during the decomposition of ammonium perchlorate (AP), polystyrene ( PS) and a composite propellant of AP+PS has the following order respectivel y: NiCr2O4 > NiFeCrO4 > NiFe2O4; NiFeCrO4 > NiCr2O4 > NiFe2O4 and NiFeCrO4 > NiCr2O4 > NiFe2O4.