期刊检索

  • 2019年第27卷
  • 2018年第26卷
  • 2017年第25卷
  • 2016年第24卷
  • 2015年第23卷
  • 2014年第22卷
  • 2013年第21卷
  • 2012年第20卷
  • 2011年第19卷
  • 2010年第18卷
  • 第1期
  • 第2期

主管单位 中华人民共和国
工业和信息化部
主办单位 中国材料研究学会
哈尔滨工业大学
主编 苑世剑 国际刊号ISSN 1005-0299 国内刊号CN 23-1345/TB

期刊网站二维码
微信公众号二维码
引用本文:陈益超,颜文斌,石爱华,易静.微波辅热-甲醇还原法制备M相二氧化钒粉体[J].材料科学与工艺,2019,27(3):41-46.DOI:10.11951/j.issn.1005-0299.20180040.
CHEN Yichao,YAN Wenbin,SHI Aihua,YI Jing.Preparation of M-phase vanadium dioxide powder by microwave assisted thermal reduction of methanol[J].Materials Science and Technology,2019,27(3):41-46.DOI:10.11951/j.issn.1005-0299.20180040.
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 279次   下载 573 本文二维码信息
码上扫一扫!
分享到: 微信 更多
微波辅热-甲醇还原法制备M相二氧化钒粉体
陈益超1,2,颜文斌1,3,石爱华1,3,易静1,3
(1.吉首大学 化学化工学院,湖南 吉首 416000;2.湖南省锰锌产品质量监督检验中心,湖南 吉首 416000; 3.矿物清洁生产与绿色功能材料开发湖南省重点实验室,湖南 吉首 416000)
摘要:
为获得具有良好相变特性的M相VO2粉体,本文以V2O5为原料、甲醇作还原剂,采用微波辅热制备M相VO2粉体.探讨了微波辅热功率、填充度、反应温度、反应时间、甲醇用量因素对制备VO2的影响,采用X射线衍射(XRD)、差示扫描量热法(DSC)和扫描电子显微镜(SEM),对产物进行了物相、相变和形貌特征的表征.结果表明:在微波辅热功率为1 000 kW,填充度为0.7,反应温度为250 ℃时,反应时间为60 min,V2O5质量与甲醇体积比为5∶3时,得到B相的VO2粉体;B相的VO2再经过800 ℃高温热处理后完全转化为具有相变功能的M相,M相VO2粉体纯度为99.20%,产率为92.30%,相变点温度为68.6 ℃,晶体形貌呈现较匀称的棒状结构,长度为1~2 μm.
关键词:  微波辅热  甲醇还原法  制备  二氧化钒  粉体
DOI:10.11951/j.issn.1005-0299.20180040
分类号:TB34
文献标识码:A
基金项目:国家自然科学基金资助项目(21566010);吉首大学研究生项目(14JDY051);湖南省高校科技创新团队支持计划资助.
Preparation of M-phase vanadium dioxide powder by microwave assisted thermal reduction of methanol
CHEN Yichao1,2, YAN Wenbin1,3, SHI Aihua1,3, YI Jing1,3
(1.College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China; 2.Manganese and Zinc Product Quality Supervision and Inspection Center of Hunan Province, Jishou 416000, China; 3.Key Laboratory of Mineral Cleaner Production and Green Functional Materials in Hunan Province, Jishou 416000, China)
Abstract:
By adopting microwave assisted heating, we used vanadium pentoxide as raw material and methanol as reducing agent to prepare M-phase vanadium dioxide powder with good phase transformation characteristics. Effects of microwave heating power, fullness, reaction temperature, reaction time, and methanol dosage on the preparation of vanadium dioxide powder were discussed. The phase, phase transition, and morphology of vanadium oxides were characterized by XRD, DSC, and SEM. Results show that the powder was B phase vanadium dioxide when the microwave heating power was 1 000 kW, fullness was 0.7, reaction temperature was 250 ℃, reaction time was 60 min, and the mass/volume ratio of vanadium pentoxide to methanol was 5∶3. In addition, the obtained B phase transferred to M-phase after the heat treatment at 800 K. The purity of the M-phase vanadium dioxide was 99.20%, yield was 92.30%, and the phase transformation point was 68.6 ℃. The crystal morphology showed a more symmetrical rod-shaped structure, whose length was about 1~2 μm.
Key words:  microwave assisted heating  methanol reduction method  preparation  vanadium dioxide

友情链接LINKS