The Characterization of Micro-Structure of Cobalt on γ-Al2O3 for FTS:Effects of Pretreatment on Ru-Co/γ-Al2O3

Title
The Characterization of Micro-Structure of Cobalt on γ-Al2O3 for FTS:Effects of Pretreatment on Ru-Co/γ-Al2O3
Authors
정재선이재석최가람RAMESH.S문동주
Keywords
Fischer-Tropsch Synthesis; Calcination atmosphere; GTL-FPSO; Direct reduction
Issue Date
2015-06
Publisher
Fuel
Citation
VOL 149, 118-129
Abstract
Ruthenium-promoted γ-Al2O3-supported cobalt catalysts were prepared by different slurry impregnation methods and calcined in a hydrogen/air atmosphere. The prepared catalysts were well characterized by N2 physisorption, TPR, XRD, TEM and XPS techniques. The addition of Ru caused the reduction peaks to shift towards lower temperatures due to the spillover of hydrogen from the Ru species. The ruthenium-promoted catalyst calcined under a hydrogen atmosphere leads to metallic cobalt with an HCP structure and shows good catalytic activity for Fischer Tropsch Synthesis under the reaction conditions studied. The catalyst calcined under an air atmosphere leads to metallic cobalt with FCC structures and showed lower catalytic activity. It was also found that the calcination atmosphere and structure of the catalyst have a profound effect on the activity and selectivity for FT synthesis.
URI
http://pubs.kist.re.kr/handle/201004/48287
ISSN
00162361
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KIST Publication > Article
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