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Citation: Liu Ji-Xin, Xie You-Chang. Single-wall Carbon Nanotubes Produced by Decomposition of CH₄ on W-Fe-M Catalysts[J]. Acta Physico-Chimica Sinica, ;2003, 19(11): 1093-1096. doi: 10.3866/PKU.WHXB20031123 shu

Single-wall Carbon Nanotubes Produced by Decomposition of CH₄ on W-Fe-M Catalysts

1.
College of Chemistry and Molecular Engineering, Peking University　100871

Received Date: 28 March 2003
Available Online: 15 November 2003

A series of W-Fe-M catalysts with high BET surface area were prepared by mixing Mg(NO3)2•6H2O,ammonium tungstate, citric acid, Fe(NO3)3•9H2O and H2O,followed by drying at 150 ℃ and decomposing at 550 ℃.Using these catalysts, bundled SWCNTs with diameter 1～3 nm for each tube, were synthesized in a fluidized reactor. The maximum yield of SWCNTs was 36 mg/100 mg. TEM, micro-Raman and TPO (temperature programmed oxidation) results showed that the products were SWCNTs of high purity and almost defect-free. From the EDAX results and phase-diagram of W-Fe, we deduced that the active phase for SWCNTs growth was a solid solution or an intermetal compound of tungsten and iron.
- Single-wall carbon nanotubes (SWCNTs);W-Fe-M ;Fluidized bed,CCH4 decomposition
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Single-wall Carbon Nanotubes Produced by Decomposition of CH4 on W-Fe-M Catalysts

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通讯作者: 陈斌, bchen63@163.com

Single-wall Carbon Nanotubes Produced by Decomposition of CH₄ on W-Fe-M Catalysts