Formation of Pt and Pd complex oxides using lead oxide and their solubility in hydrochloric acid

IF 0.9 Q3 MINING & MINERAL PROCESSING
Ryoji Sanekata, T. Nagai
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引用次数: 0

Abstract

ABSTRACT Platinum and palladium are platinum group metals (PGMs) used in automotive catalysts. Recycling PGMs is necessary because of their low production volumes. Recycling of Pt and Pd, there is a need to develop effective methods for recovering Pt and Pd from metal based automotive catalysts and methods for acid dissolution of Pt and Pd that do not require strong oxidant. Recently, it has been shown that PGMs can be made into complex oxides, which can be dissolved in HCl without oxidant. In this study, we investigated the formation conditions of complex oxides of Pt, Pd and PbO, and their solubility in HCl. As a result, PbPt2O4 was prepared at 873–973 K, Pb2PtO4 at 873–973 K, and PbPdO2 at 773–1073 K. These complex oxides exhibited high solubility in HCl without oxidant. There were differences in solubility in Pt and Pd complex oxides.
用氧化铅制备Pt和Pd复合氧化物及其在盐酸中的溶解度
铂和钯是用于汽车催化剂的铂族金属(PGMs)。回收PGMs是必要的,因为它们的产量低。Pt和Pd的回收利用,需要开发从金属基汽车催化剂中回收Pt和Pd的有效方法,以及不需要强氧化剂的Pt和Pd的酸溶方法。最近有研究表明,PGMs可以制成复合氧化物,无需氧化剂即可溶解于HCl中。在本研究中,我们研究了Pt, Pd和PbO的复合氧化物的形成条件及其在HCl中的溶解度。结果表明,PbPt2O4、Pb2PtO4和PbPdO2分别在873 ~ 973 K、873 ~ 973 K和773 ~ 1073 K下制备。这些复合氧化物在无氧化剂的HCl中具有较高的溶解度。在铂和钯络合物氧化物中的溶解度存在差异。
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来源期刊
CiteScore
3.50
自引率
0.00%
发文量
6
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