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个人信息Personal Information
副教授
硕士生导师
任职 : 中国无机盐工业协会硼化工分会秘书长, 全国无机盐信息总站硼化物协作组秘书长, 中国化工学会无机酸碱盐专委会硼化物专家组成员, 辽宁省硼镁资源化工与新材料工程技术研究中心副主任, 辽宁省硼镁特种功能材料制备与应用技术工程实验室副主任, 辽宁省非金属矿工业协会副会长.
性别：男
毕业院校：近畿大学
学位：博士
所在单位：化工学院
学科：化学工艺. 功能材料化学与化工
办公地点：大连理工大学西部校区化工综合楼A610
电子邮箱：jczhong@dlut.edu.cn
Preparation and characterization of magnesium borate for special glass
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论文类型：期刊论文
发表时间：2010-05-01
发表刊物：3rd International Symposium on Functional Materials/Advances in Functional Materials Conference
收录刊物：SCIE、EI、CPCI-S、Scopus
卷号：T139
ISSN号：0031-8949
摘要：Magnesium borate with a variety of B(2)O(3)/MgO molar ratios, which can be applied for special glass, has been prepared through the reaction of light-burned magnesia with boric acid by a hydrothermal method. The effects of the B(2)O(3)/MgO molar ratio of raw materials, reaction time, temperature and liquid to solid ratio (ml g(-1)) on the synthetic product are investigated. The XRD and TG-DTG analyses indicate that the prepared magnesium borate is a mixture of magnesium hexaborate hydrate and ascharite. The results show that high B(2)O(3)/MgO molar ratios of raw materials and low reaction liquid-solid ratios favour the product with a high B(2)O(3)/MgO molar ratio and vice versa. There exists free MgO in the product when the reaction temperature is below 140 degrees C or the reaction time is not enough, because of the incomplete reaction of magnesium oxide with boric acid. The process of fractional crystallization for the magnesium borate mixture is also discussed.