Sulfur-Resistant CeO2-Supported Pt Catalyst for Waste-to-Hydrogen: Effect of Catalyst Synthesis Method

To improve the sulfur tolerance of CeO2-supported Pt catalysts for water gas shift (WGS) using waste-derived synthesis gas, we investigated the effect of synthesis methods on the physicochemical properties of the catalysts. The Pt catalysts using CeO2 as a support were synthesized in various pathway...

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Bibliographic Details
Published in:Catalysts 2022-12, Vol.12 (12), p.1670
Main Authors: Hong, Ga-Ram, Kim, Kyoung-Jin, Ahn, Seon-Yong, Kim, Beom-Jun, Park, Ho-Ryong, Lee, Yeol-Lim, Lee, Sang Soo, Jeon, Yukwon, Roh, Hyun-Seog
Format: Article
Language:English
Subjects:
Adsorption
Alternative energy sources
Catalysts
Catalytic activity
Cerium oxides
Chemical reactions
Dispersion
Environmental policy
Hydrogen
Hydrogen sulfide
Methods
Moisture content
Municipal solid waste
Nanoparticles
Oxygen
Sol-gel processes
Storage capacity
Sulfur
Synthesis gas
Water gas
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Summary:To improve the sulfur tolerance of CeO2-supported Pt catalysts for water gas shift (WGS) using waste-derived synthesis gas, we investigated the effect of synthesis methods on the physicochemical properties of the catalysts. The Pt catalysts using CeO2 as a support were synthesized in various pathways (i.e., incipient wetness impregnation, sol-gel, hydrothermal, and co-precipitation methods). The prepared samples were then evaluated in the WGS reaction with 500 ppm H2S. Among the prepared catalysts, the Pt-based catalyst prepared by incipient wetness impregnation showed the highest catalytic activity and sulfur tolerance due to the standout factors such as a high oxygen-storage capacity and active metal dispersion. The active metal dispersion and oxygen-storage capacity of the catalyst showed a correlation with the catalytic performance and the sulfur tolerance.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal12121670