Journal
CATALYSIS TODAY
Volume 388, Issue -, Pages 237-246Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2020.06.067
Keywords
Precipitation/digestion method; Cerium hydroxyl carbonate; Cerium precursor; Incipient wetness impregnation method; Cu dispersion; Oxygen storage capacity
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2019R1C1C1005022]
- Korea Ministry of Environment as Waste to Energy-Recycling Human Resource Development Project [YL-WE-19-001]
- National Research Foundation of Korea [2019R1C1C1005022] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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CeO2 supports were synthesized using different methods and nano-sized CeO2 supports were prepared through pre-calcination. Among the prepared catalysts, Cu/CeO2-CHC showed the highest CO conversion due to its highest Cu dispersion and oxygen storage capacity.
CeO2 supports have been synthesized through a different precipitation/digestion method with various cerium precursors (cerium hydroxide (CH), cerium hydroxy carbonate (CHC), cerium carbonate (CC)). Nano-sized CeO2 supports with a high BET surface area were prepared through the pre-calcination of cerium precursors. 20 wt.% of Cu was loaded onto the prepared CeO2 supports through an incipient wetness impregnation method. Among the prepared catalysts, Cu/CeO2-CHC yielded the highest CO conversion between the temperature range from 200 to 360 degrees C. This result was primarily due to possessing the highest Cu dispersion and a high oxygen storage capacity (OSC). In addition, the 20 wt.% Cu/CeO2 catalyst exhibited 100 % CO2 selectivity.
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