REDOX-CONTROLLED SOLUBILITY OF PALLADIUM IN A BOROSILICATE GLASS MELT

被引：26
|
作者：
SCHREIBER, HD
HARVILLE, TR
DAMRON, GN
机构：
[1] Department of Chemistry, Virginia Military Institute, Lexington, Virginia
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 05期
关键词：
glass; nuclear waste; palladium; reduction–oxidation; solubility;
D O I：
10.1111/j.1151-2916.1990.tb05220.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Palladium establishes the Pd2+–Pd0 redox equilibrium in a reference alkali borosilicate melt. Most of the palladium exists as the insoluble metal, with only a small fraction of the palladium present as the divalent palladium ion dissolved in the melt. The relative reduction potential of this Pd2+–Pd0 redox couple in the reference glass melt is greater than such easily reduced couples as Ni3+–Ni2+ and Mn3+–Mn2+. Palladium metal in glass melts containing appropriate amounts of nickel and sulfur readily partitions into an immiscible nickel sulfide phase; palladium also tends to associate with tellurium in insoluble particulates. Copyright © 1990, Wiley Blackwell. All rights reserved
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收藏
页码：1435 / 1437
页数：3
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