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Design of Refining Slag Based on Raman and NMR Spectroscopy Study for Removing Phosphorus for SoG-Si
Qian, Guoyu1; Wang, Zhi1; Gong, Xuzhong1; Cao, Jianwei1; Ma, Wenhui2
2020
Source PublicationSILICON
ISSN1876-990X
Volume12Issue:1Pages:171-183
AbstractIn present study, Nuclear magnetic resonance (NMR), Raman vibrational spectroscopy were used to investigate in detail the behavior and state of phosphorus (P) in a system SiO2-CaO-Na2O-P2O5 slag. The role of the degree of P-Silicon (Si) cross linking on the P removal from silicon using slag treatment was highlighted by comparing the dephosphorization data. The results show that adding Na2O into acidity slag (CaO/SiO2 = 0.5) from 0 to 30 wt% results in the first increase and then decrease of the removal ratio of P from silicon. When Na2O content is near 15 wt%, the removal ratio of P is above 60%. P2O5 oxidized of P from silicon can be incorporated into the silicate network through P-BO-Si bonds and be stabilized in slag in the form of Q(3) (Si and P) species. The removal ratio of P presents a same trend as the relative amount of P-BO-Si bonds and Q(3) (Si and P) species, demonstrating fixing P in slag could promote the P removal. Q(2) (Si) species of the silicate network as primary intermediate structure could capture P to form Q(3) (Si and P) species. When Na2O is less than 15 wt%, Q(3) (Si and P) species is promoted to be formed by increasing Na2O, Conversely, it will be depolymerized as Na2O is added to more than 15 wt% to release P by the preferred break of P-BO-Si bonds.
KeywordSolar grade silicon Slag refining Phosphorus removal Raman structure NMR structure
DOI10.1007/s12633-019-00111-x
Language英语
WOS KeywordSOLID-STATE NMR ; SILICON ; BORON ; GLASSES ; PROPERTY ; INSIGHTS ; BEHAVIOR ; B-11
Funding ProjectNational Natural Science Foundation of China[51604256] ; National Natural Science Foundation of China[U1702251] ; National Key R&D Program of China[2018YFC1901801]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China
WOS IDWOS:000511866900018
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39233
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhi
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Qian, Guoyu,Wang, Zhi,Gong, Xuzhong,et al. Design of Refining Slag Based on Raman and NMR Spectroscopy Study for Removing Phosphorus for SoG-Si[J]. SILICON,2020,12(1):171-183.
APA Qian, Guoyu,Wang, Zhi,Gong, Xuzhong,Cao, Jianwei,&Ma, Wenhui.(2020).Design of Refining Slag Based on Raman and NMR Spectroscopy Study for Removing Phosphorus for SoG-Si.SILICON,12(1),171-183.
MLA Qian, Guoyu,et al."Design of Refining Slag Based on Raman and NMR Spectroscopy Study for Removing Phosphorus for SoG-Si".SILICON 12.1(2020):171-183.
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