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| Reduction of PdCl3SC(NH2)2- by Iron Powder and H2O2 |
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Received:November 09, 2020
Revised:November 17, 2020
Accepted:November 18, 2020
Published Online:March 24, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.04.010 |
| KeyWord:palladium; reduction; Fe-H2O2 |
| Author | Institution |
| Zhang bao-ping |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室;武汉科技大学 钢铁冶金及资源利用省部共建教育部重点实验室 |
| Shi Pei-ran |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| XIAO Yun-kun |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| WANG Yin |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
| ZHANG Heng |
武汉科技大学 省部共建耐火材料与冶金国家重点实验室 |
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| Abstract: |
| PdCl3SC(NH2)2- in solution was reduced with Fe-H2O2 to recover palladium. Mechanism of reduction was investigated. Influences of pH value, reduction time, dosage of H2O2 and iron powder on reduction rate of palladium were explored. The results show that free radical of ?OH with strong oxidation ability is produced. Free radical can destroy construction of palladium-thiourea-chlorine complex ion, which makes PdCl3SC(NH2)2- change into PdCl42- and increase reducing rate. Average reduction rate is 99.25% under the optimum conditions including volume of solution of 20 mL, pH value of 2, reduction time of 60 min, dosage of H2O2 of 0.10 mL/mL, and amount of iron powder of 0.50 mg/mL. |
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