Characterization strategy of polymeric transition metal species transformation for high-purity metal recovery  

作　　者：Jiawei Wen Yan Wu Shujie Lin Pengge Ning 

机构地区：[1]Beijing Engineering Research Center of Process Pollution Control,Institute of Process Engineering,Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing,100190,China [2]School of Chemical Engineering and Technology,Xi'an Jiaotong University,28 Xianning West Road,Xi'an,710049,China [3]Collaborative Innovation Center of Chemical Science and Engineering,Tianjin,300072,China

出　　处：《Green Chemical Engineering》2021年第3期309-316,共8页绿色化学工程（英文）

基　　金：supported by China Postdoctoral Science Foundation(No.2020M670459,2020T130655);National Natural Science Foundation of China(No.22008248 and 51934006).

摘　　要：The aqueous metal species with similar chemical properties are usually extracted together,limiting deep separation for high-purity metal.However,rare attention has been paid to metal speciation characterization and transformation during separation.Herein,the hydrolysis evolution of polymeric metal species was investigated systematically by electrospray ionization time-of-flight mass spectrometry(ESI-TOF-MS).The transformation evolutions were visualized with respect to characteristic vanadium species(V_(1),V_(2),V_(3),V_(4) and V_(10)),chromium species(Cr_(1) and Cr_(2)),tungsten(W_(1),W_(2),W_(4),W_(6) and W_(10))and molybdenum(Mo_(1),Mo_(2) and Mo_(4))species.The key characteristics(such as specfic pHs and concentrations)for speciation variation were revealed.The polymerization behavior of several transition metals can be semiquantitative characterized by this strategy.The sufficient speciation transformation provides a solid base for metal speciation chemistry,and guides further development of high-purity metal recovery.

关 键 词：Metal ion speciation WPPC Vanadium recovery Polymerization behavior ESI-TOF-MS 

分 类 号：TF841.3[冶金工程—有色金属冶金]