Chemical synthesis of α-cobalt hydroxide

被引:108
作者
Rajamathi, M
Kamath, PV [1 ]
Seshadri, R
机构
[1] Bangalore Univ, Cent Coll, Dept Chem, Bangalore 560001, Karnataka, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India
关键词
layered compounds; chemical synthesis;
D O I
10.1016/S0025-5408(00)00199-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Precipitation reactions using ammonia yield a novel cobalt hydroxide phase that is structurally and compositionally similar to alpha-nickel hydroxide. The use of other synthetic methods yields the well-known beta-Co(OH)(2). The slab composition, mode of anion inclusion, and thermal behavior of the hydroxides obtained by ammonia precipitation are similar to those of alpha-nickel hydroxide; however, the materials are poorly ordered. A DIFFaX simulation of the powder X-ray diffraction patterns offers the best visual march with the observed patterns for a 50% stacking disorder and a disc radius between 100 and 1000 Angstrom. (C) 2000 Elsevier Science Ltd, All rights reserved.
引用
收藏
页码:271 / 278
页数:8
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