CAS OpenIR
Preparation of Vanadium Oxalate by Solvent Extraction and Purification with P507 and Its Physicochemical Properties
Zhang, J; Zhu, ZW; Lei, Z; Wang, LN; Chen, DS; Yi, AF; Su, H; Qi, T; Zhang Jian; Zhu Zhaowu; Lei Ze; Wang Lina; Chen Desheng; Yi Aifei; Su Hui; Qi Tao
2019
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume40Issue:4Pages:740
AbstractVanadium oxalate is an ideal precursor used for the preparation of vanadium containing catalysts, advanced phase change material of VO2, high performance VN and other vanadium based chemical products. Currently, few research on the preparation of VOC2O4 was found to be reported. In this study, highly pure vanadium oxalate was prepared through "extraction-stripping-evaporative crystallization" method using 2-ethylhexyl dihydrogen phosphate(P507) as the extractant and H2C2O4 as the stripping reagent from a vanadium leach solution obtained by sodium roasting and water leaching of vanadium titano-magnetite slags. V(IV) stripping from the loaded P507 solution with H2C2O4 was emphatically studied and the stripping conditions were optimized. The result showed that vanadium could be almost completely (99. 98%) stripped at an A/O ratio of 1 :5 and 50 degrees C using 2. 0 mol/L oxalic acid solution in three stages (theoretical). The concentration of VOC2O4 would reach 290 g/L in the loaded strip liquor. The vanadium oxalate was characterized by X-ray diffraction (XRD), energy dispersive spectrometer(EDS), field emission scanning electron microscope (SEM) and synchronous thermal analyzer(TGA-DSC). The result showed that vanadium oxalate was VOC2O4 center dot 2H(2)O and it had high purity, good crystallinity and average particle size distribution.
KeywordVanadium leach solution Stripping Crystallization VOC2O4 Physicochemical characterization
SubtypeArticle
DOI10.7503/cjcu20180528
WOS IDWOS:000468465500017
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28242
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Zhang, J,Zhu, ZW,Lei, Z,et al. Preparation of Vanadium Oxalate by Solvent Extraction and Purification with P507 and Its Physicochemical Properties[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2019,40(4):740, 746.
APA Zhang, J.,Zhu, ZW.,Lei, Z.,Wang, LN.,Chen, DS.,...&Qi Tao.(2019).Preparation of Vanadium Oxalate by Solvent Extraction and Purification with P507 and Its Physicochemical Properties.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,40(4),740.
MLA Zhang, J,et al."Preparation of Vanadium Oxalate by Solvent Extraction and Purification with P507 and Its Physicochemical Properties".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 40.4(2019):740.
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