Effect of surface composition of Fe catalyst on the activity for the production of high-calorie synthetic natural gas (SNG)

Yong Hee Lee, Kwan Young Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An Fe2O3 catalyst was applied to the production of high-calorie synthetic natural gas (SNG). With this catalyst, the product distribution changed as the surface composition of the Fe2O3 catalyst changed. The effect of these changes on the catalytic activity was investigated. The active phases of the Fe2O3 catalyst were a mixture of low-carbon FeCx and Fe3C, which was maintained for 10 h, accompanied by the regeneration of Fe3O4. The surface Fe concentration increased after 10 h reaction, and this increased the CO conversion. In addition, the amounts of adsorbed C2H4 and C3H6 increased, which resulted in an increase in carbon chain growth. The surface concentration of oxygen also increased due to the regeneration of Fe3O4, thus reducing the C3H6 adsorption strength; in contrast, C2H4 adsorption increased, resulting in an enhanced paraffin-to-olefin (p/o) ratio for C2 hydrocarbons and reduced p/o ratio for C3 hydrocarbons.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalKorean Journal of Chemical Engineering
DOIs
Publication statusAccepted/In press - 2016 Nov 24

Fingerprint

Surface structure
Natural gas
Catalysts
Alkenes
Hydrocarbons
Paraffin
Paraffins
Olefins
Carbon
Adsorption
Carbon Monoxide
Catalyst activity
Oxygen

Keywords

  • Fe Catalyst
  • Fischer-Tropsch
  • Iron Carbide
  • Methanation
  • Paraffin-to-olefin Ratio

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Effect of surface composition of Fe catalyst on the activity for the production of high-calorie synthetic natural gas (SNG)",
abstract = "An Fe2O3 catalyst was applied to the production of high-calorie synthetic natural gas (SNG). With this catalyst, the product distribution changed as the surface composition of the Fe2O3 catalyst changed. The effect of these changes on the catalytic activity was investigated. The active phases of the Fe2O3 catalyst were a mixture of low-carbon FeCx and Fe3C, which was maintained for 10 h, accompanied by the regeneration of Fe3O4. The surface Fe concentration increased after 10 h reaction, and this increased the CO conversion. In addition, the amounts of adsorbed C2H4 and C3H6 increased, which resulted in an increase in carbon chain growth. The surface concentration of oxygen also increased due to the regeneration of Fe3O4, thus reducing the C3H6 adsorption strength; in contrast, C2H4 adsorption increased, resulting in an enhanced paraffin-to-olefin (p/o) ratio for C2 hydrocarbons and reduced p/o ratio for C3 hydrocarbons.",
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AU - Lee, Kwan Young

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N2 - An Fe2O3 catalyst was applied to the production of high-calorie synthetic natural gas (SNG). With this catalyst, the product distribution changed as the surface composition of the Fe2O3 catalyst changed. The effect of these changes on the catalytic activity was investigated. The active phases of the Fe2O3 catalyst were a mixture of low-carbon FeCx and Fe3C, which was maintained for 10 h, accompanied by the regeneration of Fe3O4. The surface Fe concentration increased after 10 h reaction, and this increased the CO conversion. In addition, the amounts of adsorbed C2H4 and C3H6 increased, which resulted in an increase in carbon chain growth. The surface concentration of oxygen also increased due to the regeneration of Fe3O4, thus reducing the C3H6 adsorption strength; in contrast, C2H4 adsorption increased, resulting in an enhanced paraffin-to-olefin (p/o) ratio for C2 hydrocarbons and reduced p/o ratio for C3 hydrocarbons.

AB - An Fe2O3 catalyst was applied to the production of high-calorie synthetic natural gas (SNG). With this catalyst, the product distribution changed as the surface composition of the Fe2O3 catalyst changed. The effect of these changes on the catalytic activity was investigated. The active phases of the Fe2O3 catalyst were a mixture of low-carbon FeCx and Fe3C, which was maintained for 10 h, accompanied by the regeneration of Fe3O4. The surface Fe concentration increased after 10 h reaction, and this increased the CO conversion. In addition, the amounts of adsorbed C2H4 and C3H6 increased, which resulted in an increase in carbon chain growth. The surface concentration of oxygen also increased due to the regeneration of Fe3O4, thus reducing the C3H6 adsorption strength; in contrast, C2H4 adsorption increased, resulting in an enhanced paraffin-to-olefin (p/o) ratio for C2 hydrocarbons and reduced p/o ratio for C3 hydrocarbons.

KW - Fe Catalyst

KW - Fischer-Tropsch

KW - Iron Carbide

KW - Methanation

KW - Paraffin-to-olefin Ratio

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