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| 从失效丙烷脱氢催化剂中回收铂 |
| Recovery of platinum from spent propane dehydrogenation catalyst |
| Received:November 01, 2022 |
| DOI： |
| 中文关键词: 失效丙烷脱氢催化剂 铂回收 资源再生 |
| 英文关键词: spent propane dehydrogenation catalyst platinum recycling resource regeneration |
| 基金项目:云南省科技人才和平台计划项目(2018HB110)；云南省应用基础研究计划面上项目(2016FB091、2017FB145)；云南省高层次人才培养支持计划项目(YNWR-QNBJ-2020-011) |
| Author Name | Affiliation | | LI Hongmei | Yuxi Normal University, Yuxi 653100, Yunnan, China | | ZHAO Jincheng | Yuxi Normal University, Yuxi 653100, Yunnan, China
Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China | | WANG Huan | Sino-Platinum Metals Resources Yimen Co.Ltd., Yuxi 651100, Yunnan, China | | LI Yong | Sino-Platinum Metals Resources Yimen Co.Ltd., Yuxi 651100, Yunnan, China | | ZHANG Jixiang | Yuxi Normal University, Yuxi 653100, Yunnan, China | | ZENG Yanping | Yuxi Normal University, Yuxi 653100, Yunnan, China |
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| 中文摘要: |
| 失效丙烷脱氢催化剂以α-Al2O3为载体，由于载体α-Al2O3酸碱不溶的性质，采用盐酸-氯酸钠浸出回收其中的铂。由于失效催化剂积碳较高，为38.84%，先焙烧除碳预处理，再研究温度、液固比、时间等浸出条件对铂浸出率的影响。结果表明，失效催化剂中铂的适宜浸出条件为浸出温度80 ℃，液固比8:1 (mL/g)，反应时间60 min，HCl浓度6 mol/L，饱和氯酸钠溶液与原料质量比1:6 (mL/g)，此时铂浸出率98.64%，铂得到有效回收。 |
| 英文摘要: |
| The catalyst for the dehydrogenation of propane is supported by α-Al2O3, and the active metal is platinum. Given that α-Al2O3 is insoluble either in acid or in alkali, a mixture of hydrochloric acid and sodium chlorate was used in the present study to leach platinum from α-Al2O3. Because the spent catalyst usually has a high content of carbon deposition, usually up to 38.84%, the pretreatment of calcination was carried out to remove carbon. And then the influence of leaching conditions on the leaching rate of platinum was investigated. The results showed that the optimum leaching conditions of platinum from the spent catalyst were as follows: leaching temperature 80°C, liquid-solid ratio 8:1, reaction time 60 min, HCl concentration 6 mol/L, the ratio of saturated NaClO3 to raw material 1/6 (mL/g). Under these conditions, the leaching rate reached as high as 98.64%, indicating the recovery of platinum was well achieved. |
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