[Raman spectroscopic analysis of dissolution and phase transformation of chloropinnoite in the boric acid aqueous solution].
Raman spectroscopy of dissolution and transformation of chloropinnoite in 4.5% (w.t.%) boric acid aqueous solution at 30 degrees C has been recorded. The Raman spectra of kinetics process have been obtained. The phase transformation product is kurnakovite (2MgO x 3B2O3 x 15H2O). The main polyborate anions and their interaction in aqueous solution have been proposed according to the Raman spectrum. Some assignments were tentatively given and the relations between the existing forms of polyborate anions and the crystallizing solid phases have been gained. A mechanisms of dissolution and crystallization reactions and the formation condition of kurnakovite in Qinghai-Tibet plateau were proposed and discussed.
Li
Xiao-Ping
XP
School of Tourism and Environment Science, Shaanxi Normal University, Xi' an 710062, China.
Gao
Shi-Yang
SY
Liu
Zhi-Hong
ZH
Hu
Man-Cheng
MC
Xia
Shu-Ping
SP
D000838:Anions / Q000737:chemistry; D001881:Borates / Q000737:chemistry*; D001888:Boric Acids / Q000737:chemistry*; D003460:Crystallization; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008277:Magnesium Oxide / Q000737:chemistry*; D008956:Models, Chemical; D044367:Phase Transition; D012995:Solubility; D012996:Solutions / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
D000838:Anions; D001881:Borates; D001888:Boric Acids; D012996:Solutions; C475672:chloropinnoite; D014867:Water; D008277:Magnesium Oxide; C032688:boric acid