The ionic exchange process of cobalt, nickel and copper(II) in alkaline and acid-layered titanates

被引：60
作者：
Cardoso, VD
de Souza, AG
Sartoratto, PPC
Nunes, LM
机构：
[1] Univ Fed Goias, Inst Quim, BR-74001970 Goiania, Go, Brazil
[2] Univ Fed Paraiba, Dept Quim, CCEN, BR-58059900 Joao Pessoa, Paraiba, Brazil
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2004年 / 248卷 / 1-3期
关键词：
titanates; ion exchange; cobalt; nickel and copper;
D O I：
10.1016/j.colsurfa.2004.09.012
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 titanates. K2Ti4O9 and Na2Ti3O7 and their respective acid forms, were prepared and characterized by X-ray diffraction and thermogravimetry. The ion-exchange capacity of the alkaline and acids forms towards Co, Ni and Cu(II) Sulphate were Studied and it was verified that as a general behavior. the copper cations have the highest ion-exchange capacity. Furthermore. the sodium matrix Na2Ti3O7 exhibits the largest ion-exchange capacity of 2.66 mmol g(-1). when compared with the other matrices. Based on the thermogravimetric results and EDTA titration. the stoichiometric formulae were proposed for the synthesized compounds. (C) 2004 Elsevier B.V. All rights reserved.
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页码：145 / 149
页数：5
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