Chemical behavior of platinum-group metals in oxide glasses
Chemical behavior of platinum-group metals in oxide glasses
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DOI：
10.1016/s0022-3093(97)90128-9
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发表时间：
1997-12
影响因子：
3.5
通讯作者：
T. Akai;J. Nishii;M. Yamashita;H. Yamanaka
中科院分区：
文献类型：
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作者：
T. Akai;J. Nishii;M. Yamashita;H. Yamanaka
用光学吸收法研究了铂族金属（Pd、Rh、Pt）在几种玻璃中的溶解度。这些离子在玻璃中的浓度通过化学分析确定。通过将吸收系数与分析浓度相关联来确定离子的吸收截面。利用这些截面，这些离子在多组分玻璃中的溶解度进行了研究。发现这些金属在钠钙硼硅酸盐和钠钙铝硼硅酸盐玻璃中的溶解度< 100 ppm。还发现它们在融化过程中的挥发性。还进行了光散射测量以获得关于金属颗粒存在的信息。结果发现，相当一部分的铂存在的钠钙铝硼硅酸盐玻璃中的金属颗粒。
Solubilities of platinum group metals (Pd, Rh, Pt) in several glasses were investigated by the use of optical absorption measurements. The concentrations of these ions in the glasses were determined by chemical analysis. The absorption cross-sections of the ions were determined by relating the absorption coefficient and the analyzed concentration. Using these cross-sections, the solubilities of these ions in multicomponent glasses were investigated. It was found that solubilities of these metals are < 100 ppm in soda-lime-boro-silicate and soda-lime-alumino-boro silicate glasses. Also found was their volatility during melting. Light scattering measurements were also carried out to obtain information on the existence of metal particles. It was found that a considerable fraction of Pt exists as metal particles in soda-lime-alumino-boro-silicate glasses.