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; Hyun Seog Roh

doi:10.1016/j.apcata.2017.12.009

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, Hyun Seog Roh

Division of Environmental Engineering

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

42 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 language	English
Pages (from-to)	63-70
Number of pages	8
Journal	Applied Catalysis A: General
Volume	551
DOIs	https://doi.org/10.1016/j.apcata.2017.12.009
Publication status	Published - 2018 Feb 5

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2017R1A2B4007145).

Publisher Copyright:
© 2017

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2017.12.009

Cite this

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

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.",

author = "Lee, {Yeol Lim} and Ajay Jha and Jang, {Won Jun} and Shim, {Jae Oh} and Rode, {Chandrashekhar V.} and Jeon, {Byong Hun} and Bae, {Jong Wook} and Roh, {Hyun Seog}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2017R1A2B4007145). Publisher Copyright: {\textcopyright} 2017",

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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, Hyun Seog

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (2017R1A2B4007145). Publisher Copyright: © 2017

PY - 2018/2/5

Y1 - 2018/2/5

N2 - 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.

AB - 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.

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