Effect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water-gas shift reaction of waste derived synthesis gas

Yeol Lim Lee, Ajay Jha, Won Jun Jang, Jae Oh Shim, Chandrashekhar V. Rode, Byong Hun Jeon, Jong Wook Bae, Hyunseog Roh

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We prepared a series of alkali (Na and K) and alkaline earth metal (Ca and Ba) promoted Co/CeO2 catalysts to investigate the effect of the promoter on the catalytic performance of the catalyst in the high-temperature water-gas shift (WGS) reaction of waste derived synthesis gas. Interestingly, alkali metal promoted catalysts deactivated rapidly compared to alkaline earth metal promoted catalysts. Alkaline earth metal promoted catalysts showed relatively higher stability (> 50 h) even at a very high gas hourly space velocity of 143,000 h−1. X − ray diffraction (XRD) and transmission electron microscopy (TEM) results reveal that the higher stability of the alkaline earth metal promoted catalysts was due to the strong resistance to sintering, showing a relatively small crystallite size of metallic cobalt compared to the alkali metal promoted catalysts after WGS reaction.

Original languageEnglish
Pages (from-to)63-70
Number of pages8
JournalApplied Catalysis A: General
Volume551
DOIs
Publication statusPublished - 2018 Feb 5

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Alkaline Earth Metals
Alkaline earth metals
Water gas shift
Synthesis gas
Alkalies
Catalysts
Alkali Metals
Alkali metals
Crystallite size
Cobalt
Sintering
Gases
Transmission electron microscopy
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

Cite this

Lee, Yeol Lim ; Jha, Ajay ; Jang, Won Jun ; Shim, Jae Oh ; Rode, Chandrashekhar V. ; Jeon, Byong Hun ; Bae, Jong Wook ; Roh, Hyunseog. / Effect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water-gas shift reaction of waste derived synthesis gas. In: Applied Catalysis A: General. 2018 ; Vol. 551. pp. 63-70.
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Effect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water-gas shift reaction of waste derived synthesis gas. / Lee, Yeol Lim; Jha, Ajay; Jang, Won Jun; Shim, Jae Oh; Rode, Chandrashekhar V.; Jeon, Byong Hun; Bae, Jong Wook; Roh, Hyunseog.

In: Applied Catalysis A: General, Vol. 551, 05.02.2018, p. 63-70.

Research output: Contribution to journalArticle

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T1 - Effect of alkali and alkaline earth metal on Co/CeO2 catalyst for the water-gas shift reaction of waste derived synthesis gas

AU - Lee, Yeol Lim

AU - Jha, Ajay

AU - Jang, Won Jun

AU - Shim, Jae Oh

AU - Rode, Chandrashekhar V.

AU - Jeon, Byong Hun

AU - Bae, Jong Wook

AU - Roh, Hyunseog

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