Highly sulfur tolerant and regenerable Pt/CeO2 catalyst for waste to energy

Yeol Lim Lee; Kyoung Jin Kim; Ga Ram Hong; Seon Yong Ahn; Beom Jun Kim; Jae Oh Shim; Hyun Seog Roh

doi:10.1016/j.renene.2021.06.084

Highly sulfur tolerant and regenerable Pt/CeO₂ catalyst for waste to energy

Yeol Lim Lee, Kyoung Jin Kim, Ga Ram Hong, Seon Yong Ahn, Beom Jun Kim, Jae Oh Shim, Hyun Seog Roh

Division of Environmental Engineering

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

5 Citations (Scopus)

Abstract

Water-gas shift reaction was applied to upcycle a waste-derived synthesis gas, which contains sulfur as an impurity. Pt/CeO₂ was chosen as an appropriate catalyst through a metal and support screening study. The Pt/CeO₂ catalyst showed stable catalytic activity without any deactivation for 100 h when the H₂S was injected to 100 ppm, and still showed a sulfur tolerance even after 1,000 ppm of H₂S was injected. In particular, the catalytic activity was fully regenerated when the H₂S injection was stopped, regardless of the H₂S concentration. The high sulfur tolerance and regeneration rate of Pt/CeO₂ catalyst was due to the high oxygen storage capacity. This accelerates the redox mechanism of the water-gas shift reaction, and also helps the removal of the adsorbed sulfur on the Pt through the oxidation reaction with the mobile oxygen originated from the CeO₂.

Original language	English
Pages (from-to)	334-343
Number of pages	10
Journal	Renewable Energy
Volume	178
DOIs	https://doi.org/10.1016/j.renene.2021.06.084
Publication status	Published - 2021 Nov

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2B5B01002346 ).

Publisher Copyright:
© 2021 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.renene.2021.06.084

Cite this

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title = "Highly sulfur tolerant and regenerable Pt/CeO2 catalyst for waste to energy",

abstract = "Water-gas shift reaction was applied to upcycle a waste-derived synthesis gas, which contains sulfur as an impurity. Pt/CeO2 was chosen as an appropriate catalyst through a metal and support screening study. The Pt/CeO2 catalyst showed stable catalytic activity without any deactivation for 100 h when the H2S was injected to 100 ppm, and still showed a sulfur tolerance even after 1,000 ppm of H2S was injected. In particular, the catalytic activity was fully regenerated when the H2S injection was stopped, regardless of the H2S concentration. The high sulfur tolerance and regeneration rate of Pt/CeO2 catalyst was due to the high oxygen storage capacity. This accelerates the redox mechanism of the water-gas shift reaction, and also helps the removal of the adsorbed sulfur on the Pt through the oxidation reaction with the mobile oxygen originated from the CeO2.",

author = "Lee, {Yeol Lim} and Kim, {Kyoung Jin} and Hong, {Ga Ram} and Ahn, {Seon Yong} and Kim, {Beom Jun} and Shim, {Jae Oh} and Roh, {Hyun Seog}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2B5B01002346 ). Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = nov,

doi = "10.1016/j.renene.2021.06.084",

language = "English",

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journal = "Renewable Energy",

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T1 - Highly sulfur tolerant and regenerable Pt/CeO2 catalyst for waste to energy

AU - Lee, Yeol Lim

AU - Kim, Kyoung Jin

AU - Hong, Ga Ram

AU - Ahn, Seon Yong

AU - Kim, Beom Jun

AU - Shim, Jae Oh

AU - Roh, Hyun Seog

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2B5B01002346 ). Publisher Copyright: © 2021 Elsevier Ltd

PY - 2021/11

Y1 - 2021/11

N2 - Water-gas shift reaction was applied to upcycle a waste-derived synthesis gas, which contains sulfur as an impurity. Pt/CeO2 was chosen as an appropriate catalyst through a metal and support screening study. The Pt/CeO2 catalyst showed stable catalytic activity without any deactivation for 100 h when the H2S was injected to 100 ppm, and still showed a sulfur tolerance even after 1,000 ppm of H2S was injected. In particular, the catalytic activity was fully regenerated when the H2S injection was stopped, regardless of the H2S concentration. The high sulfur tolerance and regeneration rate of Pt/CeO2 catalyst was due to the high oxygen storage capacity. This accelerates the redox mechanism of the water-gas shift reaction, and also helps the removal of the adsorbed sulfur on the Pt through the oxidation reaction with the mobile oxygen originated from the CeO2.

AB - Water-gas shift reaction was applied to upcycle a waste-derived synthesis gas, which contains sulfur as an impurity. Pt/CeO2 was chosen as an appropriate catalyst through a metal and support screening study. The Pt/CeO2 catalyst showed stable catalytic activity without any deactivation for 100 h when the H2S was injected to 100 ppm, and still showed a sulfur tolerance even after 1,000 ppm of H2S was injected. In particular, the catalytic activity was fully regenerated when the H2S injection was stopped, regardless of the H2S concentration. The high sulfur tolerance and regeneration rate of Pt/CeO2 catalyst was due to the high oxygen storage capacity. This accelerates the redox mechanism of the water-gas shift reaction, and also helps the removal of the adsorbed sulfur on the Pt through the oxidation reaction with the mobile oxygen originated from the CeO2.

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