Bv. Lvov et Av. Novichikhin, MECHANISM OF THERMAL-DECOMPOSITION OF HYDRATED COPPER NITRATE IN VACUO, Spectrochimica acta, Part B: Atomic spectroscopy, 50(12), 1995, pp. 1459-1468
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 wi
th 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 deaquat
ion, and the second stage, primarily denitration of the original hydra
ted nitrate. The basic nitrate formed in the second stage most probabl
y has the formula Cu(NO3)(2) . 3Cu(OH)(2). It has been established tha
t 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 consis
tent with the gasification mechanism of thermal decomposition.