합성천연가스 생산을 위한 고효율 Ni계 촉매의 제법에 따른 촉매의 반응특성 조사

Title
합성천연가스 생산을 위한 고효율 Ni계 촉매의 제법에 따른 촉매의 반응특성 조사
Other Titles
Reactivity Test of Ni-based Catalysts Prepared by Various Preparation Methods for Production of Synthetic Nature Gas
Author(s)
이태진장선기박노국고동준[고동준]임효준[임효준]변창대[변창대]
Keywords
촉매 제법; 메탄화반응; 합성천연가스; 소결현상; 니켈/알루미나 촉매; Catalytic preparation method; Methanation; SNG; Sintering; Ni/Al_2O_3 catalyst
Issue Date
201104
Publisher
한국수소및신에너지학회
Citation
한국수소및신에너지학회논문집, v.22, no.2, pp.249 - 256
Abstract
In this study, the Ni-based catalysts for the production of synthetic natural gas were prepared by various preparation methods such as the co-precipitation, precipitation, impregnation and physical mixing methods. The ranges of the reaction conditions were the temperatures of 250~350℃, H_2/CO mole ratio of 3.0, the pressures of 1 atm and the space velocity of 20000 ml/g_-cat.・h. It was found that the catalyst prepared by precipitation method had higher CO conversion than the catalyst prepared by co-precipitation method. While the catalyst prepared by precipitation method had the formation of NiO structure, the catalyst prepared by co-precipitation method had the formation of NiAl_2O_4 structure. It was confirmed that Ni-based catalyst prepared by the physical mixing method had the lowest CO conversion because it was deactivated by the production of Ni_3C during the methanation. As a result, it was shown clearly that Ni-based catalysts prepared by impregnation method expressed the highest catalytic activity in CO methanation.
URI
http://hdl.handle.net/YU.REPOSITORY/25335
ISSN
1738-7264
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공과대학 > 화학공학부 > Articles
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