Effect of the Zn(II) on the reduction of Cu(II) in natural clinoptilolite

被引：6
|
作者：
Iznaga, I. Rodriguez
Petranovskii, V.
Castillon, F. F.
Farias, M. H.
机构：
[1] Univ Havana, IMRE, Zeolites Engn Lab, Havana 10400, Cuba
[2] Univ Nacl Autonoma Mexico, Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico
来源：
OPTICAL MATERIALS | 2006年 / 29卷 / 01期
关键词：
natural zeolite; clinoptilolite; ion exchange; copper; zinc; reduction; nanoparticles;
D O I：
10.1016/j.optmat.2006.03.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The[Cu(H2O)(n)](2+) reduction in the presence of Zn2+, with both cations supported on natural clinoptilolite, has been studied using hydrogen flow at different reduction temperatures. The analysis of the obtained results allows to conclude that the Cu2+ reduction process and the subsequent aggregation of the reduced species of copper forming particles of colloidal and nanometric size is sensitive to the presence of zinc and to the temperature of reduction. The presence of Zn2+ diminishes the temperature Of Cu2+ reduction. The Cu2+ reduction in the presence of Zn2+ could constitute an alternative procedure to control the degree of aggregation of reduced copper species and, thus, to modify the size of the resultant copper nanoparticles in the clinoptilolite matrix. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：105 / 109
页数：5
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