Urea hydrolysis of cobalt(II) nitrate melts: synthesis of novel hydroxides and hydroxynitrates

被引：53

作者：

Rajamathi, M ^{[1
]}

Kamath, PV ^{[1
]}

机构：

[1] Bangalore Univ, Cent Coll, Dept Chem, Bangalore 560001, Karnataka, India

来源：

INTERNATIONAL JOURNAL OF INORGANIC MATERIALS | 2001年 / 3卷 / 07期

关键词：

urea hydrolysis; cobalt(II) nitrate melts; novel hydroxides; hydroxynitrates;

D O I：

10.1016/S1466-6049(01)00090-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Urea hydrolysis of Co(II) nitrate melts in an open vessel yields different phases at different temperatures. While at 80 degreesC a hydrotalcite-like mixed-valent Co(II,III) hydroxide of formula Co(OH)(2)(NO3)(0.27).2/3H(2)O is obtained, at 100 degreesC we obtain a modification of Co(II) hydroxide with formula Co(OH)(1.75)(NO3)(0.25).2/3H(2)O. At higher temperatures, two different basic salts of composition Co-7(OH)(12)(NO3)(2). 5H(2)O (120 degreesC) and Co-3(OH)(4)(NO3)(2) (160 degreesC) are obtained. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：901 / 906

页数：6

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