Mechanism of thermal decomposition of hydrated copper nitrate in vacuo

被引：72

作者：

Lvov, BV

Novichikhin, AV

机构：

[1] Department of Analytical Chemistry, St. Petersburg Technical University, St. Petersburg

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 1995年 / 50卷 / 12期

关键词：

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

D O I：

10.1016/0584-8547(95)01402-0

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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.

引用

页码：1459 / 1468

页数：10

共 18 条

[1]

ADDISON CC, 1958, J AM CHEM SOC, V80, P3099

[2]

BRUER E, 1965, J CHEM PHYS, P2466

[3] STUDIES ON THE THERMAL-DECOMPOSITION OF CU(NO3)2.3 H2O [J].