화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.94, 317-325, February, 2021
DOI10.1016/j.jiec.2020.11.002  Export Citation
Dispersion behavior of various single metals on carbonaceous coal supports and their reactivity in methanol steam reforming
Soohyun Kim1, Hermawan Prajitno1, 2, Jiho Yoo1, †, Sangdo Kim1, Donghyuk Chun1, Jeonghwan Lim1, Hokyung Choi1, Sihyun Lee1, and Hyuk Im1
  • 1Find Dust Research Department, Korea Institute of Energy Research, 152, Gajeong-ro, Yuseong-gu, Daejeon, 34129 Republic of Korea
  • 2University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
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Coal as catalytic support is advantageous in many respects. The pore structure and surface composition are controllable, and the high thermal conductivity can increase the thermal efficiency of the reactor. It is stable in acidic or basic media and it is easy to recycle the catalyst after use. In this study, six different coals were evaluated as catalytic supports based on their ability to disperse of the metal and their catalytic performance. Nickel particles with an average diameter of <11 nm are typically dispersed on low-rank coals (LRCs). The nickel catalysts supported on LRCs show 60-70% hydrogen yield for methanol steam reforming (MSR), and one of them maintained the activity during 1000 h continuous run, confirming the stability as catalyst support. Most of the well-known catalytic metals such as Pt, Pd, Rh, Ru, Mn, Co, Fe, Zn, Bi, Mo, K, Cu, Ce, Mg, Ga, and La, are dispersed on LRC (Eco coal) support uniformly with an average size of <10 nm. Much improved dispersion of the metals on LRC confirms the chance of having improved catalytic activity compared to the conventional carbon supports.
Keywords:Catalyst support;Methanol steam reforming;Nickel;Dispersion;Coal
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