您当前所在位置: 首页 > 学者

汪的华

  • 37浏览

  • 0点赞

  • 0收藏

  • 0分享

  • 273下载

  • 0评论

  • 引用

期刊论文

Electrolysis of solid MoS2 in molten CaCl2 for Mo extraction without CO2 emission

汪的华Guoming Li a Dihua Wang a* Xianbo Jin a George Z. Chen ab

Electrochemistry Communications 9(2007)1951-1957,-0001,():

URL:

摘要/描述

Sintered (300℃) porous pellets of MoS2 were electrolysed to elemental S and Mo in molten CaCl2 (800-900℃) under argon at 1.0-3.0V for 1-20h. On a graphite anode, the product was primarily S (but traces of CS2 could not yet be excluded by this work) and evaporated from the molten salt, allowing the electrolysis to continue. It then condensed to solid at the lower temperature regions of the system. The anode remained intact after repeated uses. The MoS2 pellet was highly conducting at high temperatures and could be fast electroreduced to fine Mo powders (0.1-1.0lm) in which the S content could be below 1000ppm. No reduction occurred at voltages below 0.5V. Partial reduction was seen at 0.5-0.7V, and converted MoS2 to a mixture of MoS2 and Mo3S4, orMo3S4 and Mo with the Mo content increasing with the voltage. Cyclic voltammetry of the MoS2 powder in a Mo-cavity electrode, together with the electrolysis results, revealed the reduction mechanism to include two steps: MoS2 to Mo3S4 at 0.28V (potential vs. Ag/AgCl), and then to Mo at -0.43V.

【免责声明】以下全部内容由[汪的华]上传于[2010年07月29日 18时11分46秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

我要评论

全部评论 0

本学者其他成果

    同领域成果