摘要
本文利用^(11)B的核磁共振(NMR)研究了钠硼钒酸盐(Na_2O-B_2O_3-V_2O_5)三元玻璃体系。通过测量分析BO_4、BO_(3s)和BO_(3A)单元的比例,在Krogh-Moe二元模型基础上,提出本文三元体系玻璃的结构模型。分析结果表明:钠硼二元玻璃结构模型用于说明三元体系时,必须考虑第三元V_2O_5的加入将分享一部分Na_2O形成钒酸盐。实验结果与理论分析相符。
^(11)B NMR was carried out for the system of sodium borovanadate glasses Na_2O-B_2O_3-V_2O_(?) The fractions of BO_4, BO_(as) and BO_(3(?)) units were measured and analysed. The glass structural model of the ternary system is proposed according to Krogh-Moe structural model. The results Indicate that the ternary system can be explained by a modified structural model of the binary system of sodium borate glasses. The difference between the binary and ternary system is the sharing of part of Na_2O between borate and V_2O_5 Vanadate is formed with the mix of V_2O_5 and Na_2O. The results of the experiment coincide with the theoretical analyses.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
1989年第5期385-392,共8页
Journal of The Chinese Ceramic Society
关键词
钠硼钒酸盐
玻璃
粉末样品
NMR
glass state
powder sample
NMR
porate
sodium borovanadate
