US EPA

1687488 

Journal Article 

Mechanism of thermal decomposition of hydrated copper nitrate in vacuo 

Lvov, BV; Novichikhin, AV 

1995 

1 

Spectrochimica Acta Part B: Atomic Spectroscopy
ISSN: 0584-8547 

50 

12 

1459-1468 

WOS:A1995TL81900005 

https://linkinghub.elsevier.com/retrieve/pii/0584854795014020
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The general scheme of three-stage thermal decomposition of Cu(NO3)(2) . 3H(2)O to CuO has been refined based on evolved-gas-analysis data with a quadrupole mass analyzer (Jackson et al., Spectrochim. Acta Part B, 50 (1995) 1423). Quantitative evaluation of the composition of the gaseous products shows that the first stage involves primarily deaquation, and the second stage, primarily denitration of the original hydrated nitrate. The basic nitrate formed in the second stage most probably has the formula Cu(NO3)(2) . 3Cu(OH)(2). It has been established that the molecular oxygen observed in the third stage of decomposition is produced by catalytic decomposition of NO2 on the surface of CuO. The presence of Cu-containing ions in all stages of the process is consistent with the gasification mechanism of thermal decomposition. 

copper nitrate decomposition; evolved gas analysis; gasification mechanism; nitrous dioxide catalytic decomposition