通过对稀王水控量溶解钯的条件、活性钯粉的还原条件、硝酸溶解钯的条件研究，解决了部分钯粉不能完全溶解的困难，建立了活化-溶解法规模化生产硝酸钯的工艺条件。对活化前后钯粉的粒度、比表面积和表面形貌分析的结果表明，活化后钯粉颗粒变小，表面积增大，扫描电镜显示，活化后钯粉粒径变小，呈海绵状，钯的溶解活性提高，有利于钯粉的完全溶解。
An activation-dissolution method has been established to produce palladium nitrate in a large scale from palladium powder. Palladium powder was activated by treatment with aqua regia and then by reduction with hydrazine hydrate. The activated palladium powder could be completely dissolved in nitric acid, which greatly facilitates a large-scale production of palladium nitrate. The activation mechanism was investigated by comparing the changes in the particle size, specific surface area and surface structure of palladium powder before and after activation. Palladium powder particles diminished and the surface area increased after activation, which led to an acceleration of the dissolution process.
参考文献
| [1] | Ikeda M;Ikegami T;Ikeda M et al.Catalyst for cleaning internal combustion engine exhaust gas and method for cleaning exhaust gas using said catalyst[P].US,2008071867 ,2008-03-19. |
| [2] | Kubo H;Goto Hi;Mikita K .Exhaust gas cleaning catalyst and process for production the same[P].US,2006327782,2006-12-05. |
| [3] | Shen J;Fu Q;Zheng J et al.High surface area tetragonal zirconia and processes for synthesizing same：[P].US,20060245999,2006-11-02. |
| [4] | 岳军;张艮交;贾莉伟 等.制备硝酸钯溶液的方法[P].中国,CN102557156A,2011-12-15. |
| [5] | 一种硝酸钯的制备方法[S]. |
| [6] | 何宝林,陈益贤,哈曜,刘汉范.微波热分解法制备溶剂稳定的钯金属纳米颗粒[J].中南民族大学学报(自然科学版),2004(01):1-3. |
| [7] | 何武强,何宝林,陈益贤,廖小娟,刘汉范.溶剂稳定的钯金属纳米颗粒的制备[J].中南民族大学学报（自然科学版）,2004(04):12-14. |
| [8] | 吕飞,张庆红,王野,万惠霖.应用微乳法制备二氧化硅包裹钯纳米粒子[J].化学学报,2004(18):1713-1716. |
| [9] | 欧阳林,王树茂,郭秀梅,刘晓鹏,蒋利军,曾蓉.制备工艺对钯粉粒径的影响[J].稀有金属,2012(05):774-779. |
| [10] | 林海山,戴凤英.铂族金属分析的标准方法概况[J].黄金,2012(04):55-58. |
| [11] | 刘清,赵由才,招国栋,郭翠香.EDTA络合滴定与酸碱滴定联合测定含锌碱性溶液中游离碱、锌和碳酸钠[J].冶金分析,2006(06):10-13. |
| [12] | 刘杨,范兴祥,董海刚,赵家春,陈家林,周利民,吴跃东,付光强,李博杰,曾睿.贵金属物料的溶解技术及进展[J].贵金属,2013(04):65-72. |
| [13] | 邓德贤.从废Pd-C催化剂中回收钯的研究[J].稀有金属,1999(02):104-107. |
| [14] | 李运玲,李秋小,智丽飞.催化氧化制醇醚羧酸盐废催化剂中钯的回收[J].稀有金属,2009(05):724-727. |
| [15] | 张永强,陈闽子,李晓博,李阿丹.从废旧电子元件中提取钯工艺的研究[J].稀有金属,2000(04):314-316. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%