2020年2月
Solubilization of Rhodium in Hydrochloric Acid Using an Alkali Metal Salt Method
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
- ,
- ,
- 巻
- 51
- 号
- 1
- 開始ページ
- 377
- 終了ページ
- 385
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s11663-019-01740-8
- 出版者・発行元
- SPRINGER
Acids such as aqua regia, a 3:1 mixture of hydrochloric acid (HCl) and nitric acid, that contain strong oxidizing agents are used in the dissolution-based recovery of platinum group metals (PGMs). However, nitrate-nitrogen emission has become subject to increasingly strict environmental regulations in recent years. Accordingly, we herein propose a dissolution process for PGMs via the formation of complex oxides using HCl alone. We prepared complex oxides of alkali metals and rhodium (Rh), which is particularly hard to dissolve, and investigated their dissolution behaviors in HCl. Rh-containing complex oxides were prepared by calcining Rh powder and alkali metal salts in air, and dissolution tests using HCl were conducted on the complex oxides obtained. It was found that Rh-containing complex oxides were completely dissolved under appropriate calcination and dissolution conditions.
- リンク情報
- ID情報
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- DOI : 10.1007/s11663-019-01740-8
- ISSN : 1073-5615
- eISSN : 1543-1916
- ORCIDのPut Code : 71783409
- Web of Science ID : WOS:000511881200036