Raman spectroscopic analysis of supersaturated aqueous solution of MgO.B2O3-32%MgCl2-H2O during acidification and dilution.
Raman spectra of supersaturated aqueous solution of MgO.B2O3-32%MgCl2-H2O during acidification/alkalization and dilution have been studied. The assignments of the recorded Raman shift are given. The main existing forms of polyborate anions and their interaction in borate aqueous solution have been proposed through spectroscopic analysis. The experimental results indicate that the higher concentration of cation are beneficial not only to the dissolution of boric acid but also to the polymerization of polyborate anions. The existing forms and interaction among them also depend on the concentration of boron and the pH value in solution.
School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, PR China. liuzh@snnu.edu.cn
Liu
L
Zhihong
Gao
G
Bo
Li
L
Shuni
Hu
H
Mancheng
Xia
X
Shuping
D000838:Anions / Q000737:chemistry; D001881:Borates / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007201:Indicator Dilution Techniques; D015636:Magnesium Chloride / Q000737:chemistry*; D008277:Magnesium Oxide / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014867:Water / Q000737:chemistry*
D000838:Anions; D001881:Borates; D001896:Boron Compounds; D012996:Solutions; D015636:Magnesium Chloride; D014867:Water; D008277:Magnesium Oxide; C042168:boron oxide