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Selective methanation of CO in H2-rich gas stream by synthetic nickel-containing smectite based catalysts

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Title: Selective methanation of CO in H2-rich gas stream by synthetic nickel-containing smectite based catalysts
Authors: Yoshida, Hiroshi Browse this author
Watanabe, Kou Browse this author
Iwasa, Nobuhiro Browse this author
Fujita, Shin-ichiro Browse this author
Arai, Masahiko Browse this author →KAKEN DB
Keywords: CO removal
Selective methanation
Platinum doping
Issue Date: Jan-2015
Publisher: Elsevier
Journal Title: Applied Catalysis B: Environmental
Volume: 162
Start Page: 93
End Page: 97
Publisher DOI: 10.1016/j.apcatb.2014.06.029
Abstract: The selective methanation of CO in a H-2-rich gas stream has been investigated with nickel catalysts including synthetic nickel-containing smectite (SM(Ni)) catalysts undoped and doped with platinum in small quantities and conventional nickel catalysts on SiO2, Al2O3, ZrO2, and MgO. The nickel content in SM(Ni) and the nickel loading in the other catalysts were the same, being 35 wt.%. The CO conversion with SM(Ni) was smaller than those with the conventional supported nickel catalysts at temperatures of 150-300 degrees C. However, the former showed the higher selectivity to the methanation of CO of >95% at 250 degrees C or below compared to the latter catalysts. The low activity of SM(Ni) was ascribed to a small area of exposed nickel species. The area of exposed nickel species was improved by doping a reduction promoter of platinum to SM(Ni), resulting in an increase in the activity while keeping the high selectivity to the CO methanation. The influence of reduction temperature and platinum loading on the activity and selectivity was investigated.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 荒井 正彦

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