Recovery of Platinum From Spent Reforming Catalyst by Acid Leaching and Coprecipitation

被引：13

作者：

Masuda, C. ^{[1
]}

Yonezu, K. ^{[1
]}

Watanabe, K. ^{[1
]}

Yokoyama, T. ^{[1
,2
]}

机构：

[1] Kyushu Univ, Dept Earth Resources Engn, Fac Engn, Fukuoka 8190395, Japan

[2] Kyushu Univ, Dept Chem, Fac Sci, Fukuoka 8128581, Japan

来源：

INTERNATIONAL CONFERENCE ON EARTH SCIENCE AND TECHNOLOGY PROCEEDINGS | 2013年 / 6卷

关键词：

D O I：

10.1016/j.proeps.2013.01.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Platinum content in a spent reforming catalyst were extracted by oxalic acid at temperatureup to 80 degrees C.Pt extraction was increased by increasing the reaction time. The presence of coke covering did not effect on the spent catalyst. According to previous study, after the dissolution with oxalic acid, platinum in the leachate exist as ionic form such as [PtCl6](4-) and [PtCl4](2).Fe(II) solution were added to the leachate containing Pt to be a molar ratio of 1/10 [Pt(IV)/Fe(II)] .The solution was adjusted to the pH 6 with NaOH solution to precipitate iron hydroxide.Only about 20% of platinum was coprecipitated with Fe(II) hydroxide after 30 min.These are different from the result of model experiment, and we discussed the problem and the solution toward practical recovery of Pt from the spent catalyst.

引用

页码：435 / 440

页数：6

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