Global decomposition kinetics and critical explosion temperatures of 2-(5-cyanotetrazolato) pentaammine cobalt (III) perchlorate

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5591981

Pickard, J M

Kinetics of decomposition of 2-(5-Cyanotetrazolato) Pentaammine Cobalt (III) Perchlorate, CP, at constant pressure and constant volume were determined with isothermal and dynamic differential scanning calorimetry (DSC). The critical explosion temperature (T/sub c/ = 508K) for cylindrical CP pellets with radii of 0.238 cm was determined with accelerating rate calorimetry (ARC) operated in the isothermal mode. DSC data in the early stages of reaction at constant pressure were fitted to an autocatalytic rate law based on a second-order time dependence to obtain: log(k/s/sup -1/) = (12.38 +- 0.77) - (155 +- 8)/theta where theta = 2.303RT kJ/mol. Analysis of the ignition region at constant volume resulted in: log(k/sub i//s/sup -1/) = (22.3 +- 6.3) - (279 +- 27)/theta. Approximation of the global decomposition mechanism as a two-stage process in which all exoergicity is associated with ignition was found to yield a predicted critical temperature in good agreement with experiment.

• Research Organization: Monsanto Research Corp., Miamisburg, OH (USA). Mound
• DOE Contract Number: AC04-76DP00053
• OSTI ID: 5591981
• Report Number(s): MLM-3111(OP); CONF-8310159-7; ON: DE84002828
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
AMMINES
CALORIMETRY
CHEMICAL EXPLOSIVES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
COBALT COMPLEXES
COMPLEXES
DECOMPOSITION
EXPLOSIONS
EXPLOSIVES
HALOGEN COMPOUNDS
IGNITION
KINETICS
OXYGEN COMPOUNDS
PERCHLORATES
REACTION KINETICS
TRANSITION ELEMENT COMPLEXES