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Measurement and Modeling for Molybdenum Extraction from the Na2MoO4-H2SO4-H2O System by Primary Amine N1923
Zhang, Xinyue1,2,3; Ning, Pengge1; Cao, Hongbin1; Zhang, Yi1,2,3
2016-02-10
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume55Issue:5Pages:1427-1438
Abstract

In this study, the liquid liquid equilibrium (LLE) system N1923-Na2MoO4-H2SO4 was investigated. Within different molybdenum concentration ranges, the extraction reactions were determined using the slope method at 293.15 K based on the molybdenum phase diagram. The slopes for Mo(VI) extracted with N1923 were determined as 1 and 4, respectively. Mo(VI) was extracted as H2MoO4 center dot(RNH2) and H6Mo7O24 center dot(RNH2)(4). The thermodynamic models were established with the Pitzer equation for aqueous phase and organic Pitzer as well as Margules equations for organic phase optimized by the General Algebraic Modeling System. Two chemical equilibrium constants and their corresponding interaction parameters were regressed from experimental LLE data. The correlated results were in good agreement with the experimental data. Furthermore, this model can also be used to predict the equilibrium composition and equilibrium pH in the aqueous phase. In addition, the mean ionic activity coefficients for Na2MoO4 and Na6Mo7O24 at 293.15 K were calculated with the Pitzer parameters. The chemical structures of the extraction complex were also proposed to illustrate the association.

KeywordTri-n-octylamine Solvent-extraction Osmotic Coefficients Margules Equations Organic Solutions Sulfuric-acid Tungstic Acid Electrolytes Thermodynamics Separation
SubtypeArticle
Subject AreaEngineering, Chemical ; Engineering
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.iecr.5b03612
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTri-n-octylamine ; Solvent-extraction ; Osmotic Coefficients ; Margules Equations ; Organic Solutions ; Sulfuric-acid ; Tungstic Acid ; Electrolytes ; Thermodynamics ; Separation
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation(21206168 ; 51425405)
WOS IDWOS:000370212000027
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20689
Collection研究所(批量导入)
Corresponding AuthorNing, Pengge
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China
2.Tianjin Univ, Natl Engn Res Ctr Distillat Technol, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
3.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xinyue,Ning, Pengge,Cao, Hongbin,et al. Measurement and Modeling for Molybdenum Extraction from the Na2MoO4-H2SO4-H2O System by Primary Amine N1923[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2016,55(5):1427-1438.
APA Zhang, Xinyue,Ning, Pengge,Cao, Hongbin,&Zhang, Yi.(2016).Measurement and Modeling for Molybdenum Extraction from the Na2MoO4-H2SO4-H2O System by Primary Amine N1923.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,55(5),1427-1438.
MLA Zhang, Xinyue,et al."Measurement and Modeling for Molybdenum Extraction from the Na2MoO4-H2SO4-H2O System by Primary Amine N1923".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 55.5(2016):1427-1438.
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