Effects of Zr/Ce molar ratio and water content on thermal stability and structure of ZrO2-CeO2 mixed oxides prepared via sol-gel process

	Effects of Zr/Ce molar ratio and water content on thermal stability and structure of ZrO2-CeO2 mixed oxides prepared via sol-gel process
	Huang WZ ; Yang JL ; Wang CJ ; Zou BL ; Meng XS ; Wang Y ; Cao XQ ; Wang Z
刊名	materials research bulletin
	2012
卷号	47 期号:9 页码:2349-2356
关键词	TIO2 NANOPARTICLES HYDROLYSIS WATER ZIRCONIA TEMPERATURE CEXZR1-XO2 TITANIA POWDERS CRYSTALLIZATION CATALYSTS COATINGS
ISSN号	0025-5408
通讯作者	cao xq
中文摘要	zro2-ceo2 mixed oxides were synthesized via sol-gel process. thermal stability, structure and morphology of samples were investigated by powder x-ray diffraction, ft-raman spectroscopy, x-ray photoelectron spectroscopy and scanning electron microscopy. in this approach, the solvent composition and zr/ce molar ratio have great influences on the structure and morphology of final products. with decreasing water content in the mixed solvent, specific surface area of powders increased and the single tetragonal phase was obtained. only when the volume ratio of water and ethanol and the zr/ce molar ratio were 1:1, tetragonal t ''-zr0.5ce0.5o2 could be stabilized in powders at temperature as high as 1000 degrees c. meanwhile, tetragonal (t') and (t '') phases coexisted in zr0.5ce0.5o2 solid solution without peak splitting after calcination at 1100 degrees c, further transforming into cubic and tetragonal (t') phases at 1200 degrees c. the effective activation energy for zr0.5ce0.5o2 nanocrystallite growth during annealing is about 5.24 +/- 0.15 kj/mol. crown copyright (c) 2012 published by elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000309081400037
公开日期	2013-04-23
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/47965]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Huang WZ,Yang JL,Wang CJ,et al. Effects of Zr/Ce molar ratio and water content on thermal stability and structure of ZrO2-CeO2 mixed oxides prepared via sol-gel process[J]. materials research bulletin,2012,47(9):2349-2356.
APA	Huang WZ.,Yang JL.,Wang CJ.,Zou BL.,Meng XS.,...&Wang Z.(2012).Effects of Zr/Ce molar ratio and water content on thermal stability and structure of ZrO2-CeO2 mixed oxides prepared via sol-gel process.materials research bulletin,47(9),2349-2356.
MLA	Huang WZ,et al."Effects of Zr/Ce molar ratio and water content on thermal stability and structure of ZrO2-CeO2 mixed oxides prepared via sol-gel process".materials research bulletin 47.9(2012):2349-2356.