在有机酸中介的浸出动力学研究和从已耗尽的催化剂中选择性提取Mo,V和Ni
Jing Gao1, Wenchao Lu2, Yujiang Li3
1Key Laboratory of Colloid and Interface Science of Education Ministry, Shandong University, Jinan 250100, China; College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China.
酸有效地从已耗尽的催化剂中出,和. 该研究优化了条件,并揭示了用于金属回收的Avrami溶解模型.
科学领域:
- * 材料科学 材料科学
- * 化学工程 化学工程
- * 环境科学 环境科学
背景情况:
- *使用过的催化剂含有有价值的金属,如 (Mo), (Ni) 和 (V).
- *选择性液对于高效的金属回收和废物利用至关重要.
- * 有机酸为金属溶解提供了一个潜在的更绿色的替代品.
研究的目的:
- * 确定最有效的有机酸,用于从已耗尽的催化剂中选择性地出Mo,Ni和V.
- * 调查关键参数 (酸度,温度,S/L比) 对金属炼效率的影响.
- * 阐明目标金属的浸出机制和动力学.
主要方法:
- * 选六种有机酸 (氧酸,酸,酸,酸,酸,酸,酸) 用于金属溶解.
- *系统地研究出水参数:酸度 (1.0mol/L),温度 (60°C) 和固体/液体比率 (1/20).
- *使用Avrami模型进行动态分析,以确定反应顺序和速率控制步骤.
主要成果:
- * 浸出效率顺序:氧酸 > 酸 > 酸 > 马龙酸 > 酸 > 酸.
- * 通过氧酸实现了最佳的液化>93.07% Mo,>86.64% V,和>74.21% Ni.
- * 漏机制涉及酸分解和复合分解;Mo和V溶解遵循了Avrami模型.
结论:
- *氧酸是最有效的有机酸,可从已耗尽的催化剂中选择性回收Mo,Ni和V.
- *Mo和V的化动力学是由Avrami模型描述的,表明复杂的反应途径.
- *优化条件为从工业废物中可持续回收金属提供了可行的途径.
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