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Germanium: Germanium Dioxide Reduced with Carbon at Full Red Heat, Fused under Borax (Roscoe 1913)
Carbon takes the oxygen from germanium dioxide at a full red heat. Washing removes the leftover carbon and a little borax melts the regulus clean.
Result: greyish-white, brittle, lustrous germanium (sp. gr. 5.47, melts about 960 °C), often in octahedra.
Source: Roscoe and Schorlemmer, A Treatise on Chemistry vol. 2 (1913), p. 838. Not given: amounts and vessel. Picture drawn by Youblob.
中级
1 day
说明
1
1
Reduce with carbon at full red heat
Reduce with carbon at full red heat
Heat germanium dioxide with carbon to a full red heat. Ours: powdered charcoal in a clay crucible.
此步骤所需材料:
二氧化锗1 as required所需工具:
木炭
石制研钵与研杵
耐火黏土坩埚
坩埚炉
坩埚钳2
2
Wash out the carbon
Wash out the carbon
Wash the semi-crystalline regulus with water to remove the carbon.
所需工具:
水
玻璃烧杯3
3
Fuse with a little borax
Fuse with a little borax
Fuse the metal with a little borax.
所需工具:
硼砂粉
耐火黏土坩埚
坩埚炉
坩埚钳此蓝图制作
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