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

doi:10.1007/s11814-016-0272-6

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 journal › Article › peer-review

13 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 FeC_x 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 language	English
Pages (from-to)	320-327
Number of pages	8
Journal	Korean Journal of Chemical Engineering
Volume	34
Issue number	2
DOIs	https://doi.org/10.1007/s11814-016-0272-6
Publication status	Published - 2017 Feb 1

Bibliographical note

Publisher Copyright:
© 2017, Korean Institute of Chemical Engineers, Seoul, Korea.

Keywords

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

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1007/s11814-016-0272-6

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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, Yong Hee

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

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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