Irradiation decomposition

The decomposition of the nitrates produces oxygen molecules, and we have verified that if a mixture of silver nitrates and closed tubes is submitted to a thermal treatment (400°C) decomposing the salt, it is possible to observe filled CNTs (Ag, Co, Cu [34]). It appears that oxygen liberated during the thermal decomposition of the metal salt erodes the CNT tip and the yet un-decomposed salt then enters by capillarity (see Fig. 8). We have also observed during the electron-irradiation decomposition of enclosed nitrate that the liberated gases erodes the CNT cavity [22] (see the innermost tubes in Fig. 5). 

As a heavy metal azide, it is considerably endothermic (A// +279.5 kJ/mol, 1.86 kJ/g). While pine silver azide explodes at 340°C [1], the presence of impurities may cause explosion at 270° C. It is also impact-sensitive and explosions are usually violent [2], Its use as a detonator has been proposed. Application of an electric field to crystals of the azide will detonate them, at down to — 100°C [3], and it may be initiated by irradiation with electron pulses of nanosecond duration [4], See other catalytic impurity incidents, irradiation decomposition... 

See Other IRRADIATION DECOMPOSITION INCIDENTS See related NON-METAL HYDRIDES... 

See other IRRADIATION DECOMPOSITION INCIDENTS, MERCURY COMPOUNDS, N-METAL DERIVATIVES... 

See other acyl azides, irradiation decomposition incidents... 

See Other HALOACETYLENE DERIVATIVES, IRRADIATION DECOMPOSITION INCIDENTS... 

See related organometallic peroxides See other irradiation decomposition... 

See Other IODINE COMPOUNDS, IRRADIATION decomposition incidents, non-metal PERCHLORATES... 

See Chlorine Nitrogen compounds, or Dimethyl phosphoramidate Phosphorus pentachloride Urea Sodium chloride Nitrogen compounds See other irradiation decomposition incidents... 

See Organic solvents, below See other irradiation decomposition incidents Ethylene glycol See Ethylene glycol Oxidants... 

IRRADIATION DECOMPOSITION INCIDENTS SELF HEATING AND IGNITION INCIDENTS Aluminium-magnesium alloy Iron(III) oxide, Water, 0053 Ahmiinium-magnesium-zinc alloy, Rusted steel, 0054 Carbon dioxide, Flammable materials, 0557 Carbon dioxide, Metals, 0557 f Ethylene, Steel-braced tyres, 0781 Oxygen (Liquid), Asphalt, 4832 f Sulfur, Static discharges, 4897... 

Subsequently, Herley et al. [182-184] studied the thermal and photolytic (UV irradiated) decomposition kinetics of a-AlHj. In general, decomposition was quite slow. At 145°C, the length of time to obtain a full desorption was about 100 min and it was correspondingly longer at lower temperatures. Nearly no desorption was observed at 100°C. Slightly faster kinetics were obtained in the isothermal coirradiated decomposition, but still too slow for any practical application as a storage material. 

When exposed to light lead azide soon turns yellow on the irradiated side. The layer of changed substance protects the deeper layers from further decomposition and thus irradiation does not entail changes in the explosive properties of the substance. However, as Wohler and Krupko [80] have shown, if the lead azide is subjected to stirring during irradiation, decomposition may proceed too far. 

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