1. Sulfur-Resistant CeO2-Supported Pt Catalyst for Waste-to-Hydrogen: Effect of Catalyst Synthesis Method
- Author
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Ga-Ram Hong, Kyoung-Jin Kim, Seon-Yong Ahn, Beom-Jun Kim, Ho-Ryong Park, Yeol-Lim Lee, Sang Soo Lee, Yukwon Jeon, and Hyun-Seog Roh
- Subjects
waste-to-hydrogen ,water–gas shift reaction ,sulfur tolerance ,synthesis method ,oxygen-storage capacity ,Pt0 dispersion ,Chemical technology ,TP1-1185 ,Chemistry ,QD1-999 - Abstract
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.
- Published
- 2022
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