화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.109, 384-396, May, 2022
DOI10.1016/j.jiec.2022.02.023  Export Citation
Effect of reduction conditions of Mo-Fe/MgO on the formation of carbon nanotube in catalytic methane decomposition
Seon Joo Park1, 2, Ki-Duk Kim1, 3, Young Soo Park4, Kang Seok Go1, 5, †, Woohyun Kim1, 3, MinJae Kim1, 3, Nam Sun Nho1, 3, and Dong Hyun Lee2, †
  • 1Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea
  • 2Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea
  • 3, Korea
  • 4Korea Carbon Industry Promotion Agency, 110-11, Banryong-ro, Deokjin-gu, Jeonju 54853, Republic of Korea
  • 5University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
E-mail:,
The effects of temperature, hydrogen partial pressure, and time in catalytic reduction step on carbon nanotube growth in a catalytic methane decomposition have been investigated for Mo-Fe/MgO catalysts. The results show that the reduction conditions of the catalyst affect the crystal structure of the metal formed on the catalyst surface and the growth mechanism of the generated carbon nanotubes. Both diameter distribution and crystallinity of the CNTs increased with the increase of reduction temperature in the range of 400 to 800 ℃. The optimal reduction temperature with the maximum carbon yield was found to be 500 ℃. The increase of hydrogen partial pressure and reduction time increased the CNT diameter distribution, and the optimal hydrogen partial pressure and reduction time with maximum carbon yield were found to be 0.1 atm, 60 min and 0.3 atm, 5 min, respectively. In the different combination of hydrogen partial pressure and reduction time for maximizing carbon yield, the CNT average diameter did not have a significant change, while the CNT crystallinity showed opposite trends depending on the methane decomposition reaction time. Ultimately, it was confirmed that the Mo-Fe/MgO catalyst can change the properties of CNTs produced through control of reduction conditions.
Keywords:Catalytic methane decomposition;Multi-walled carbon nanotubes (MWCNTs);Mo-Fe/MgO;Reduction condition;CNT diameter;CNT crystallinity
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