摘要
我国某动力堆高放废液中有较高含量的Mo,这会导致玻璃固化过程中黄相的产生,从而影响固化体性能,所以提高Mo在固化体中的溶解度对提高固化体的废物承载能力十分重要。采用XRD、红外和Raman分析固化体的物相和网络结构变化,DSC分析固化体的玻璃化转变温度,对MoO_(3)在E玻璃中的溶解度及MoO_(3)对玻璃网络结构和玻璃化转变温度的影响进行了研究。结果表明:相较于传统硼硅酸盐玻璃,E玻璃对MoO_(3)具有较好的包容性,MoO_(3)在E玻璃中的最大溶解度为6%(质量分数),该溶解度下的玻璃化转变温度为882℃,随着MoO_(3)掺量增加,Q1占比增加,Q^(2)、Q^(3)、Q^(4)总占比减少,玻璃网络结构发生解聚,当MoO_(3)掺量超过溶解度极限时会析出CaMoO4晶体。
There is a high content of Mo in the high discharge waste stream of a power reactor in China,which can lead to the generation of yellow phase during glass curing and thus affect the performance of the cured body,so it is important to improve the solubility of Mo in the cured body to improve the waste carrying capacity of the cured body.The physical phase and network structure changes of the cured body were analyzed by XRD,IR and Raman,and the glass transition temperature of the cured body was analyzed by DSC.The solubility of MoO_(3)in E-glass and the effect of MoO_(3)on the glass network structure and glass transition temperature were investigated.The results show that E glass is more inclusive of MoO_(3)than conventional borosilicate glass,the maximum solubility of MoO_(3)in E glass is 6%,and the glass transition temperature at this solubility is 882℃.With the increase of MoO_(3)doping the percentage of Q^(1) increases,the total percentage of Q^(2),Q^(3) and Q~4 decreases,and the glass network structure decondenses,and when the MoO_(3)doping exceeds the solubility limit CaMoO4crystals will be precipitated when the MoO_(3)doping exceeds the solubility limit.
作者
杨柳
霍冀川
张行泉
朱永昌
YANG Liu;HUO Jichuan;ZHANG Xingquan;ZHU Yongchang(State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;Tianfu Institute of Research and Innovation,Southwest University of Science and Technology,Chengdu 610213,China;China Building Materials Academy Co.,LTD.,Beijing 100024,China)
出处
《玻璃》
2023年第1期7-13,共7页
Glass
基金
环境友好能源材料国家重点实验室资助项目(21fksy11)。
