会员注册 会员登录 主办单位:国家建筑材料工业局技术图书馆 加为收藏 设为主页
1151web_logo
专注建材行业知识大数据
首页 外文期刊 中文期刊 图书馆 建材智网
您所在的位置:首页>>论文报告
Thermodynamic study and methanothermal temperature-programmed reaction synthesis of molybdenum carbide
【文件类型】 【消费金额】2.7 【文章页数】9 【会员操作】  
【文章作者】Parham Roohi;Reza Alizadeh;Esmaeil Fatehifar;
【文章摘要】      Nanostructured molybdenum carbide(Mo_2C) was successfully prepared from molybdenum trioxide(MoO _3) using methanothermal temperature-programmed reaction. Thermodynamic analysis indicated that in presence of methane, the formation of Mo_2 C from MoO _3 occurs through the path of MoO _3 → MoO _2 → Mo_2 C. The carburized MoO _3 was characterized using X-ray diffraction(XRD), CHNS/O analysis, Brunauer–Emmett–Teller(BET) analysis, and field-emission scanning electron microscopy(FESEM). At final carburization temperatures of 700 and 800°C and at methane contents ranging from 5vol% to 20vol%, Mo_2 C was the only solid product observed in the XRD patterns. The results indicated that the effect of methane content on the formation of the carbide phase is substantial compared with the effect of carburization time. Elemental analysis showed that at a final temperature of 700°C, the carbon content of carburized MoO _3 is very close to the theoretical carbon mass percentage in Mo_2 C. At higher carburization temperatures, excess carbon was deposited onto the surface of Mo_2 C. High-surface-area Mo_2 C was obtained at extremely low heating rates; this high-surface-area material is a potential electrocatalyst.
【关 键 字】
【期刊】【卷】【ISSUE】【ISSUEID】    【文章期份】2016    【发布日期】2016/3/21 0:00:00    点击率:1    打印    关闭
关于我们 公告信息 业务资费 广告合同 友情链接 购买阅读卡 在线订《水泥》
网络市场部:010-65761182 网络技术部:010-51164639  传真:010-65761182 Email:service@chinabmi.com
在线咨询:  
国家建筑材料工业局技术图书馆 京ICP备06011358号   京公网安备11010502024146