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Citation: ZHANG Xiao-Fei, HU Rui-Sheng, GAO Guan-Jun, MENG He, SU Hai-Quan. Influence of Two Complexants on Structure and Performance of Ce-Sn-O Complex Oxides[J]. Acta Physico-Chimica Sinica, ;2007, 23(05): 659-663. doi: 10.3866/PKU.WHXB20070508 shu

Influence of Two Complexants on Structure and Performance of Ce-Sn-O Complex Oxides

1.
Key Laboratory of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mon lia University, Hohhot 010021, P. R. China

Received Date: 8 September 2006
Available Online: 15 April 2007

The CeO2 and Ce-Sn-O complex oxides were prepared by sol-gel method using citric acid and glucose as complexing agents, respectively. The complex oxides were characterized by XRD, TPR, FT-IR, BET, and TEM, and their catalytic activities for the combustion of methane were evaluted. The results showed that the Ce-Sn-O complex oxide, which used glucose as complexing agent, had lower complete methane conversion temperature and larger specific surface area. The TEManalysis of the Ce-Sn-O complex oxide, which used glucose as complexing agent, revealed that the particles had a mean size of 14 nm and better dispersity, while the catalyst which used citric acid as complexing agent was seriously agglomerated.
- Glucose; Citric acid; Sol-gel method; Methane combustion
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