Sulfur-Tolerant Pt/CeO2Catalyst with Enhanced Oxygen Storage Capacity by Controlling the Pt Content for the Waste-to-Hydrogen Processes

Yeol Lim Lee; Kyoung Jin Kim; Ga Ram Hong; Seon Yong Ahn; Beom Jun Kim; Ho Ryong Park; Seong Jin Yun; Jong Wook Bae; Byong Hun Jeon; Hyun Seog Roh

doi:10.1021/acssuschemeng.1c05456

Sulfur-Tolerant Pt/CeO₂Catalyst with Enhanced Oxygen Storage Capacity by Controlling the Pt Content for the Waste-to-Hydrogen Processes

Yeol Lim Lee, Kyoung Jin Kim, Ga Ram Hong, Seon Yong Ahn, Beom Jun Kim, Ho Ryong Park, Seong Jin Yun, Jong Wook Bae, Byong Hun Jeon, Hyun Seog Roh

Division of Environmental Engineering

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

11 Citations (Scopus)

Abstract

In the Pt/CeO2 catalyst, we found that the loading amount of Pt affects not only the dispersion of Pt but also the interaction between Pt and CeO2, specifically to the oxygen storage capacity. The interface between Pt and CeO2 has some special properties due to oxygen reverse spillover, which affects the oxygen storage capacity of the catalyst. The loading amount of Pt in the Pt/CeO2 catalyst was varied from 0.1 to 10.0 wt %, and the physicochemical properties were compared. The prepared samples were tested to the water-gas shift reaction in the waste-to-hydrogen process with the existence of 500 ppm of H2S to evaluate the sulfur tolerant catalytic performance. Among the samples, the 2.0% Pt/CeO2 catalyst showed the highest sulfur tolerance. Considering the catalytic reaction result and physicochemical properties, the sulfur tolerant catalytic activity can be mainly related to the oxygen storage capacity. From this result, we have concluded that the loading amount of Pt not only affects the dispersion of Pt0 but also affects the oxygen storage capacity of the catalyst.

Original language	English
Pages (from-to)	15287-15293
Number of pages	7
Journal	ACS Sustainable Chemistry and Engineering
Volume	9
Issue number	45
DOIs	https://doi.org/10.1021/acssuschemeng.1c05456
Publication status	Published - 2021 Nov 15

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A2B5B01002346). This work was also supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2021R1C1C2005231).

Publisher Copyright:
©

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Renewable Energy, Sustainability and the Environment

UN SDGs

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

Access to Document

10.1021/acssuschemeng.1c05456

Cite this

Lee, Y. L., Kim, K. J., Hong, G. R., Ahn, S. Y., Kim, B. J., Park, H. R., Yun, S. J., Bae, J. W., Jeon, B. H., & Roh, H. S. (2021). Sulfur-Tolerant Pt/CeO₂Catalyst with Enhanced Oxygen Storage Capacity by Controlling the Pt Content for the Waste-to-Hydrogen Processes. ACS Sustainable Chemistry and Engineering, 9(45), 15287-15293. https://doi.org/10.1021/acssuschemeng.1c05456

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abstract = "In the Pt/CeO2 catalyst, we found that the loading amount of Pt affects not only the dispersion of Pt but also the interaction between Pt and CeO2, specifically to the oxygen storage capacity. The interface between Pt and CeO2 has some special properties due to oxygen reverse spillover, which affects the oxygen storage capacity of the catalyst. The loading amount of Pt in the Pt/CeO2 catalyst was varied from 0.1 to 10.0 wt %, and the physicochemical properties were compared. The prepared samples were tested to the water-gas shift reaction in the waste-to-hydrogen process with the existence of 500 ppm of H2S to evaluate the sulfur tolerant catalytic performance. Among the samples, the 2.0% Pt/CeO2 catalyst showed the highest sulfur tolerance. Considering the catalytic reaction result and physicochemical properties, the sulfur tolerant catalytic activity can be mainly related to the oxygen storage capacity. From this result, we have concluded that the loading amount of Pt not only affects the dispersion of Pt0 but also affects the oxygen storage capacity of the catalyst.",

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N2 - In the Pt/CeO2 catalyst, we found that the loading amount of Pt affects not only the dispersion of Pt but also the interaction between Pt and CeO2, specifically to the oxygen storage capacity. The interface between Pt and CeO2 has some special properties due to oxygen reverse spillover, which affects the oxygen storage capacity of the catalyst. The loading amount of Pt in the Pt/CeO2 catalyst was varied from 0.1 to 10.0 wt %, and the physicochemical properties were compared. The prepared samples were tested to the water-gas shift reaction in the waste-to-hydrogen process with the existence of 500 ppm of H2S to evaluate the sulfur tolerant catalytic performance. Among the samples, the 2.0% Pt/CeO2 catalyst showed the highest sulfur tolerance. Considering the catalytic reaction result and physicochemical properties, the sulfur tolerant catalytic activity can be mainly related to the oxygen storage capacity. From this result, we have concluded that the loading amount of Pt not only affects the dispersion of Pt0 but also affects the oxygen storage capacity of the catalyst.

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