Synthesis of Highly Active Nano-Sized Pt/CeO2 Catalyst via a Cerium Hydroxy Carbonate Precursor for Water Gas Shift Reaction |
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| Authors: | Hari S. Potdar Dae-Woon Jeong Ki-Sun Kim Hyun-Seog Roh |
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| Affiliation: | (1) Department of Environmental Engineering, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon-do, 220-710, South Korea; |
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| Abstract: | Abstract A novel precipitation/digestion route has been developed to synthesize crystalline cerium hydroxy carbonate (CHC: Ce(OH)CO3) by using an equimolar quantity of cerium nitrate (Ce(NO3)3·6H2O) and mixed precipitants (KOH + K2CO3) at room temperature. Nano-sized CeO2 supports could be prepared by the pre-calcination of CHC at 400 °C for 4 h. A highly active water gas shift (WGS) catalyst, 1 wt.% Pt/CeO2 catalyst showed almost equilibrium CO conversion with 100% CO2 selectivity at 320 °C even at the gas hourly space velocity (GHSV) of 45,625 h−1. |
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