直流电弧等离子体热解甲烷制备纳米碳管
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摘要: 将直流电弧等离子体技术用于甲烷热解制备纳米碳管的过程，并用TEM、ICP-CAS、TGA对所得固相产物进行了分析表征。结果表明，纳米碳管生长在铁质反应器壁面上，直径在20 nm～50 nm之间，具有多种形态，形态较为奇特的有螺旋状纳米碳管和放射状纳米碳管。该方法的特点是可同时副产大量氢气，实现了甲烷裂解制氢与合成纳米碳管两个过程的耦合。Abstract: Carbon nanotubes(CNTs) were produced by pyrolysis of methane in DC arc argon plasma in the present study. TEM, ICP-CAS, TGA were used as analytical tools. Experimental results show that the CNTs grew on the chamber wall with multiwalled structure and various shapes. Another advantage of this method is that it can produce hydrogen simultaneously.
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Key words:
- plasma /
- methane conversion /
- carbon nanotubes /
- hydrogen /
- preparation
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