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DOI:	10.1371/journal.pone.0088236
论文题名:	Significant Improvement of Thermal Stability for CeZrPrNd Oxides Simply by Supercritical CO2 Drying
作者:	Yunzhao Fan; Zizi Wang; Ying Xin; Qian Li; Zhaoliang Zhang; Yingxia Wang
刊名:	PLOS ONE
ISSN:	1932-6203
出版年:	2014
发表日期:	2014-2-7
卷:	9, 期:2
语种:	英语
英文关键词:	Oxygen ; Ethanol ; Thermal stability ; Oxidation-reduction reactions ; X-ray photoelectron spectroscopy ; High resolution transmission electron microscopy ; Isotherms ; Carbon dioxide
英文摘要:	Pr and Nd co-doped Ce-Zr oxide solid solutions (CZPN) were prepared using co-precipitation and microemulsion methods. It is found that only using supercritical CO2 drying can result in a significant improvement of specific surface area and oxygen storage capacity at lower temperatures for CZPN after aging at 1000°C for 12 h in comparison with those using conventional air drying and even supercritical ethanol drying. Furthermore, the cubic structure was obtained in spite of the fact that the atomic ratio of Ce/(Ce+Zr+Pr+Nd) is as low as 29%. The high thermal stability can be attributed to the loosely aggregated morphology and the resultant Ce enrichment on the nanoparticle surface, which are caused by supercritical CO2 drying due to the elimination of surface tension effects on the gas-liquid interface.
URL:	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0088236&type=printable
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资源类型:	期刊论文
标识符:	http://119.78.100.158/handle/2HF3EXSE/18916
Appears in Collections:	过去全球变化的重建影响、适应和脆弱性科学计划与规划气候变化与战略全球变化的国际研究计划气候减缓与适应气候变化事实与影响

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journal.pone.0088236.PDF（3885KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

作者单位:

School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China;School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China;School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China;School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China;School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China;State Key Laboratory for Rare Earth Materials Chemistry and Applications, Peking University, Beijing, P. R. China

Recommended Citation:

Yunzhao Fan,Zizi Wang,Ying Xin,et al. Significant Improvement of Thermal Stability for CeZrPrNd Oxides Simply by Supercritical CO2 Drying[J]. PLOS ONE,2014-01-01,9(2)

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