Fischer-Tropsch synthesis: Activity of metallic phases of cobalt supported on silica

Muthu Kumaran Gnanamani; Gary Jacobs; Wilson D. Shafer; Burtron H. Davis

doi:10.1016/j.cattod.2013.03.004

Fischer-Tropsch synthesis: Activity of metallic phases of cobalt supported on silica

Muthu Kumaran Gnanamani, Gary Jacobs, Wilson D. Shafer, Burtron H. Davis

Center for Applied Energy Research (CAER)

Research output: Contribution to journal › Article › peer-review

123 Scopus citations

Abstract

By using different catalyst pretreatments, silica supported cobalt catalysts were activated to produce either hcp or fcc cobalt metal particles, as verified by XRD. H₂-TPR and pulse re-oxidation experiments show a higher dispersion of cobalt for the catalyst containing the hcp metallic phase compared to the fcc phase. Cobalt containing hcp metallic phase has shown higher CO conversion on a catalyst weight basis and less methane selectivity compared to fcc containing catalysts under similar reaction conditions. Both hcp and fcc phases of cobalt are stable during the Fischer-Tropsch (FT) synthesis.

Original language	English
Pages (from-to)	13-17
Number of pages	5
Journal	Catalysis Today
Volume	215
DOIs	https://doi.org/10.1016/j.cattod.2013.03.004
State	Published - Oct 15 2013

Bibliographical note

Funding Information:
This work was supported by the Commonwealth of Kentucky

Keywords

Fcc cobalt
Fischer-Tropsch synthesis
Hcp cobalt
XRD

ASJC Scopus subject areas

Catalysis
Chemistry (all)

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10.1016/j.cattod.2013.03.004

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title = "Fischer-Tropsch synthesis: Activity of metallic phases of cobalt supported on silica",

abstract = "By using different catalyst pretreatments, silica supported cobalt catalysts were activated to produce either hcp or fcc cobalt metal particles, as verified by XRD. H2-TPR and pulse re-oxidation experiments show a higher dispersion of cobalt for the catalyst containing the hcp metallic phase compared to the fcc phase. Cobalt containing hcp metallic phase has shown higher CO conversion on a catalyst weight basis and less methane selectivity compared to fcc containing catalysts under similar reaction conditions. Both hcp and fcc phases of cobalt are stable during the Fischer-Tropsch (FT) synthesis.",

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AU - Gnanamani, Muthu Kumaran

AU - Jacobs, Gary

AU - Shafer, Wilson D.

AU - Davis, Burtron H.

N1 - Funding Information: This work was supported by the Commonwealth of Kentucky

PY - 2013/10/15

Y1 - 2013/10/15

N2 - By using different catalyst pretreatments, silica supported cobalt catalysts were activated to produce either hcp or fcc cobalt metal particles, as verified by XRD. H2-TPR and pulse re-oxidation experiments show a higher dispersion of cobalt for the catalyst containing the hcp metallic phase compared to the fcc phase. Cobalt containing hcp metallic phase has shown higher CO conversion on a catalyst weight basis and less methane selectivity compared to fcc containing catalysts under similar reaction conditions. Both hcp and fcc phases of cobalt are stable during the Fischer-Tropsch (FT) synthesis.

AB - By using different catalyst pretreatments, silica supported cobalt catalysts were activated to produce either hcp or fcc cobalt metal particles, as verified by XRD. H2-TPR and pulse re-oxidation experiments show a higher dispersion of cobalt for the catalyst containing the hcp metallic phase compared to the fcc phase. Cobalt containing hcp metallic phase has shown higher CO conversion on a catalyst weight basis and less methane selectivity compared to fcc containing catalysts under similar reaction conditions. Both hcp and fcc phases of cobalt are stable during the Fischer-Tropsch (FT) synthesis.

KW - Fcc cobalt

KW - Fischer-Tropsch synthesis

KW - Hcp cobalt

KW - XRD

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Fischer-Tropsch synthesis: Activity of metallic phases of cobalt supported on silica

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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