Phase Separation and Crystallization of Na2O-B2O3-SiO2-SnO2 System

Abstract

Abstract: Phase separation and crystallization of Na₂O-B₃-SiO₂-SnO₂ system were discussed. Samples of different component points in every stage of thermal treatment and
chemistry dealing were analysed by EDAX, XRD and SEM. The results show that SnO₂ distributes in boron-alkali-rich phase separation area; the growth of SnO₂ crystal in the system depends on phase separation process; the crystallization size of SnO₂ is restrained by the scale of the phase
separation structure. The nanometer-SnO₂ material, loaded on silicon-rich porous carrier, can be obtained by controlling phase separation structure. This material has a good ability
in CO catalyst activity.

Key words: Na₂O-B₂O₃-SiO₂-SnO₂ system, nanometer-SnO₂, crystallization, melt-phase

CLC Number:

TQ174

ZHANG Wen-Li,JIN Jian-Guo,ZHANG Xiao-Li. Phase Separation and Crystallization of Na₂O-B₂O₃-SiO₂-SnO₂ System[J]. Journal of Inorganic Materials.

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Phase Separation and Crystallization of Na₂O-B₂O₃-SiO₂-SnO₂ System

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