期刊
CATALYSIS LETTERS
卷 141, 期 9, 页码 1268-1274出版社
SPRINGER
DOI: 10.1007/s10562-011-0656-5
关键词
Cerium hydroxy carbonate (CHC: Ce(OH)CO3); CeO2; Pt; Water gas shift (WGS); Precipitation/digestion
资金
- Korea Ministry of Environment (MOE)
- Ministry of Education, Science and Technology [2010-0002521]
- Korea Government (MEST)
- National Research Foundation of Korea [2010-0002521] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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)center dot 6H(2)O) and mixed precipitants (KOH + K2CO3) at room temperature. Nano-sized CeO2 supports could be prepared by the pre-calcination of CHC at 400 degrees 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 degrees C even at the gas hourly space velocity (GHSV) of 45,625 h(-1).
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