Fe-CO-Mo催化裂解甲烷与乙烯制备碳纳米管的研究

吴鑫华; 霍琴梅; 汪镭

doi:10.12434/j.issn.2097-2547.20250111

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Fe-CO-Mo催化裂解甲烷与乙烯制备碳纳米管的研究

炭质新材料制备与利用 | 更新时间：2025-08-25

- Fe-CO-Mo催化裂解甲烷与乙烯制备碳纳米管的研究
- Study on preparation of carbon nanotubes via cracking of methane and ethylene catalyzed by Fe-Co-Mo
- 低碳化学与化工 2025, 50(8): 169-178.
- 作者机构：
  
  1.中国科学院大学，北京 100049
  2.中国科学院成都有机化学研究所，四川成都 610041
- 作者简介：
  
  吴鑫华（1998—），硕士研究生，研究方向为碳纳米管制备，E-mail：wuxh0818@outlook.com。
  汪镭（1988—），博士，副研究员，研究方向为纳米碳材料，E-mail：wanglei@cioc.ac.cn。
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250111
  中图分类号： TQ127.11;O643.37
- 收稿日期：2025-03-17，
  
  修回日期：2025-04-03，
  
  纸质出版日期：2025-08-25
- 稿件说明：
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吴鑫华,霍琴梅,汪镭.Fe-CO-Mo催化裂解甲烷与乙烯制备碳纳米管的研究[J].低碳化学与化工,2025,50(8):169-178.

WU Xinhua,HUO Qinmei,WANG Lei.Study on preparation of carbon nanotubes via cracking of methane and ethylene catalyzed by Fe-Co-Mo[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(8):169-178.
吴鑫华,霍琴梅,汪镭.Fe-CO-Mo催化裂解甲烷与乙烯制备碳纳米管的研究[J].低碳化学与化工,2025,50(8):169-178. DOI： 10.12434/j.issn.2097-2547.20250111.

WU Xinhua,HUO Qinmei,WANG Lei.Study on preparation of carbon nanotubes via cracking of methane and ethylene catalyzed by Fe-Co-Mo[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(8):169-178. DOI： 10.12434/j.issn.2097-2547.20250111.

摘要

以甲烷单独作为碳源制备多壁碳纳米管（MWCNTs）时，甲烷转化率和MWCNTs产率均较低，且MWCNTs中还会残留较多的金属催化剂颗粒，同时导电性较差。采用催化化学气相沉积法，以柠檬酸-硝酸盐燃烧法所得Fe-Co-Mo/Al

-MgO作催化剂，甲烷和乙烯作混合碳源，制备了MWCNTs。采用TEM、SEM和N

吸/脱附等对所得催化剂及MWCNTs进行了表征，并研究了MWCNTs薄膜的导电性。结果表明，在Fe-Co-Mo/Al

-MgO催化剂（

(Fe):

(Co):

(Mo) = 4:5:1）的Fe-Co-Mo质量分数为40%、温度为740 °C、甲烷流量为60 mL/min和乙烯流量为20 mL/min的条件下进行催化裂解反应，碳产率为2553%，所得MWCNTs的比表面积为206 m

/g，平均直径为12.54 nm，并具有良好的结晶性。在环境温度为20 °C、空气湿度为60%的条件下，质量分数为25%的MWCNTs（仅改变乙烯流量为10 mL/min所得）薄膜的表面电阻为1.8 × 10

Ω/sq（选定面积内薄膜的电阻为1.8 × 10

Ω），明显优于商用对照组（2.5 × 10

Ω/sq）。

Abstract

When methane is used as the carbon source alone to prepare multi-walled carbon nanotubes (MWCNTs)

the methane conversion rate and the MWCNTs yield are low

and there will be a high content of metal catalyst particles left in MWCNTs

and the conductivity is poor. MWCNTs were prepared by catalytic chemical vapor deposition method using Fe-Co-Mo/Al

-MgO (obtained by citric acid-nitrate combustion method) as catalyst and methane and ethylene as mixed carbon sources. The obtained catalysts and MWCNTs were characterized by TEM

SEM and N

adsorption/desorption

etc.

and the conductivities of MWCNTs films were studied. The results show that when the Fe-Co-Mo mass fraction of Fe-Co-Mo/Alal

-MgO catalyst (

(Fe):

(Co):

(Mo) = 4:5:1) is 40%

the temperature is 740 ℃

the methane flow rate is 60 mL/min and the ethylene flow rate is 20 mL/min for the catalytic cracking reaction

the carbon yield is 2553% and the specific surface area and the average diameter of obtained MWCNTs are 206 m

/g and 12.54 nm

respectively

and it has good crystallinity. When the ambient temperature is 20 °C and the air humidity is 60%

the surface resistance of the MWCNTs (obtained by changing the ethylene flow rate to 10 mL/min only) film with mass fraction of 25% is 1.8 × 10

Ω/sq (the resistance of thin film in selected area is 1.8 × 10

Ω)

which is significantly better than the commercial control group (2.5 × 10

Ω/sq).

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references

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