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Citation: YE Qing, XU Bo-Qing. Textural and Structure Characterizations of Ce_1－xMn_xO₂Prepared by Citric Acid Sol-Gel Method[J]. Acta Physico-Chimica Sinica, ;2006, 22(03): 345-349. doi: 10.3866/PKU.WHXB20060318 shu

Textural and Structure Characterizations of Ce_1－xMn_xO₂Prepared by Citric Acid Sol-Gel Method

YE Qing ,
XU Bo-Qing

1.
Innovative Catalysis Program, Key Laboratory of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China

Received Date: 12 July 2005
Available Online: 10 March 2006

Textural and structure characterizations of Ce1－xMnxO2 (0≤x≤1) samples were studied by N2 adsorption/desorption, XRD and Raman spectroscopy. The N2 adsorption/desorption isotherms are found to be IV-type according to BDDT and their related hysteresis loops are H1 type. Pore size distribution of the Ce1－xMnxO2 samples is in the mesopores range with Rp (max) between 2.5 nm and 3.7 nm. Particle sizes of the samples with both high Mn (x>0.7) and low Mn (x<0.3) contents are larger than those with 0.3≤x≤0.7. Raman spectroscopic results show that the Ce1－xMnxO2 (x≠0, 1) samples contain mixed phases of α-Mn2O3 and Ce-Mn-O solid solution, although the presence of α-Mn2O3 phase is not detected in the XRD measurement of the samples with x≤0.7, suggesting that Raman spectroscopy is more sensitive in the structural characterization of Ce1－xMnxO2 samples.
- Ce1－xMnxO2; Sol-gel preparation; N2/adsorption-desorption; XRD; Raman spectrum; TEM
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Textural and Structure Characterizations of Ce1－xMnxO2Prepared by Citric Acid Sol-Gel Method

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通讯作者: 陈斌, bchen63@163.com

Textural and Structure Characterizations of Ce_1－xMn_xO₂Prepared by Citric Acid Sol-Gel Method