EFFECT OF COMPOSITION ON THE LATTICE-PARAMETERS AND THERMAL-BEHAVIOR OF NICKEL(II)-COBALT(II) HYDROXIDE NITRATE SOLID-SOLUTIONS

被引:23
作者
PETROV, K
ZOTOV, N
MIRTCHEVA, E
GARCIAMARTINEZ, O
ROJAS, RM
机构
[1] BULGARIAN ACAD SCI,INST APPL MINERAL,BU-1000 SOFIA,BULGARIA
[2] CSIC,INST CIENCIA MAT,E-28006 MADRID,SPAIN
关键词
D O I
10.1039/jm9940400611
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A series of coprecipitated nickel(II)-cobalt(II) hydroxide nitrate samples with different cationic compositions has been studied by means of X-ray diffraction, infrared spectroscopy and thermal analysis. A continuous series of solid solutions NixCo2-x(OH)3NO3 (0 less-than-or equal-to x less-than-or-equal-to 2) is formed between the end members Ni2(OH)3NO3 and Co2(OH)3NO3. The observed changes in the IR spectra have been interpreted in terms of increased polarization of the NO3- group and increased strength of the hydrogen bonds when Ni2+ is gradually substituted for Co2+. The thermal stability of the solid solutions as well as the phase composition of the solid products of thermal decomposition depend upon the initial Ni:Co ratio in the samples.
引用
收藏
页码:611 / 614
页数:4
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