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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Influence of metal particle size on oxidative CO<inf>2</inf> reforming of methane over supported nickel catalysts: Effects of second-metal addition

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Title
Influence of metal particle size on oxidative CO2</inf> reforming of methane over supported nickel catalysts: Effects of second-metal addition
Author
Bhavani, Annabathini GeethaKim, Won YoungLee, Jin WooLee, Jae Sung
Issue Date
2015-05
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMCATCHEM, v.7, no.9, pp.1445 - 1452
Abstract
Oxidative CO2</inf> reforming of methane is studied over Ni/AlCeZrOx</inf> catalyst with addition of a second metal element (Mg, Co, La, Mn, or Fe) aiming to improve the performance of the catalyst and increase their resistance to coking. Addition of Mg produces the best catalyst showing high CH4</inf> and CO2</inf> conversions as well as high selectivities to synthesis gas with no severe coke deposition. Addition of Co, La, and Mn also exhibits significant improvement, whereas Fe brings only a moderate improvement. The high activity is accompanied by high stability and low amount of deposited coke. The high activity and stability are attributed mainly to nanosized metallic particles, which accompany high amounts of available surface oxygen, and high basicity of the surface. The basicity of the catalyst promotes adsorption and dissociation of CO2</inf>, and surface oxygen can oxidize surface carbon intermediates to regenerate active metal sites before they turn to coke to sustain catalytic cycle. ⓒ 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
https://scholarworks.unist.ac.kr/handle/201301/11522
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/cctc.201500003
DOI
10.1002/cctc.201500003
ISSN
1867-3880
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