Regulation and performance study of Co-Mo/Al<sub>2</sub>O<sub>3</sub>-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth

HUANG Jinghao; WU Xinhua; WANG Ruiqi; WANG Lei

doi:10.12434/j.issn.2097-2547.20250500

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Regulation and performance study of Co-Mo/Al₂O₃-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth

更新时间：2026-06-11

- Regulation and performance study of Co-Mo/Al₂O₃-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth
- Pages: 1-9(2026)
- 作者机构：
  
  1.中国科学院成都有机化学研究所，四川成都 610041
  2.中国科学院大学，北京100049
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250500
  CLC： TQ127;O643.36
- Received：27 December 2025，
  
  Revised：2026-01-25，
  
  Online First：08 June 2026，
- 稿件说明：
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黄京濠,吴鑫华,王瑞琦等.基于微撞击流连续合成的Co-Mo/Al₂O₃-MgO催化剂对多壁碳纳米管生长的调控与性能研究[J].低碳化学与化工,

HUANG Jinghao,WU Xinhua,WANG Ruiqi,et al.Regulation and performance study of Co-Mo/Al₂O₃-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth[J].Low-Carbon Chemistry and Chemical Engineering,
黄京濠,吴鑫华,王瑞琦等.基于微撞击流连续合成的Co-Mo/Al₂O₃-MgO催化剂对多壁碳纳米管生长的调控与性能研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250500.

HUANG Jinghao,WU Xinhua,WANG Ruiqi,et al.Regulation and performance study of Co-Mo/Al₂O₃-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250500.

摘要

化学气相沉积（CVD）法制备多壁碳纳米管（MWCNTs）的效率与质量高度依赖于催化剂催化性能。传统溶胶-凝胶法因前驱体混合不均，易导致催化剂金属颗粒团聚，致使合成的多壁碳纳米管产率偏小、管径较大。将微撞击流反应器应用于Co-Mo/Al

-MgO催化剂的连续合成，并以乙烯为碳源，通过CVD法制备了多壁碳纳米管，系统探究了撞击流速与乙烯裂解温度对多壁碳纳米管产率、管径分布和石墨化程度的影响。结果表明，在撞击流速80 mL/min下，所制备的催化剂比表面积达135 m

/g，并展现出优异的还原性能（还原峰温度362.9 °C，耗氢量2.91 mmol/g）。以此催化剂在660 °C下催化裂解乙烯，可实现达6070%的多壁碳纳米管产率，且所获得的多壁碳纳米管具有较大的比表面积（262 m

/g）和较小的平均管径（(9.79 ± 2.92) nm）。本研究将为微撞击流技术在高催化性能催化剂设计与多壁碳纳米管可控合成领域提供一定参考。

Abstract

The synthesis efficiency and quality of multi-walled carbon nanotubes (MW

CNTs) by chemical vapor deposition (CVD) method are highly dependent on catalytic performances of catalysts. The conventional sol-gel method often suffers from insufficient precursor mixing

leading to metal particle agglomeration

which results in low yield and large diameter of multi-walled carbon nanotubes. The micro-impinging stream reactor was applied to the continuous synthesis of Co-Mo/Al

-MgO catalysts. Using ethylene as the carbon source

multi-walled carbon nanotubes were prepared by CVD method. The effects of impinging stream velocities and ethylene cracking temperatures on the carbon yields

tube diameter distributions and graphitization degrees of the multi-walled carbon nanotubes were systematically investigated. The results show that at the impinging stream velocity of 80 mL/min

the prepared catalyst has a specific surface area of 135 m

/g and exhibits superior reducibility (reduction peak temperature of 362.9 ℃ and hydrogen consumption of 2.91 mmol/g). This catalyst can catalyze the ethylene cracking at 660 ℃

achieving the yield of multi-walled carbon nanotubes to 6070%. The obtained multi-walled carbon nanotubes have a large specific surface area (262 m

/g) and a small average tube diameter ((9.79 ± 2.92) nm). This study will provide some reference for the design of catalysts with high catalytic performances and controllable synthesis of multi-walled carbon nanotubes by micro-impinging stream technology.

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Regulation and performance study of Co-Mo/Al2O3-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth

DOI：10.12434/j.issn.2097-2547.20250500

摘要

Abstract

关键词

Keywords

references

Regulation and performance study of Co-Mo/Al₂O₃-MgO catalysts synthesized by continuous micro-impinging stream technology for multi-walled carbon nanotube growth