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Citation: ZHANG Lei, ZHENG Ling-Min, GUO Jia-Xiu, WU Dong-Dong, NG Mao-Chu, WANG Jian-Li, CHEN Yao-Qiang. Structure Evolution Process of Ce_0.65Zr_0.25Y_0.1O_1.95 Prepared by Oxidation-Coprecipitation Method[J]. Acta Physico-Chimica Sinica, ;2008, 24(08): 1342-1346. doi: 10.1016/S1872-1508(08)60056-X shu

Structure Evolution Process of Ce_0.65Zr_0.25Y_0.1O_1.95 Prepared by Oxidation-Coprecipitation Method

1.
College of Chemistry, Sichuan University, Chengdu 610064, P. R. China

Received Date: 23 January 2008
Available Online: 5 June 2008

Ce0.65Zr0.25Y0.1O1.95 oxides were prepared by oxidation-coprecipitation method using ammonia and salvolatile as precipitators. The as-prepared samples were thermally treated at different temperatures and characterized by thermogravimetry-differential scanning calorimetry (TG-DSC), Fourier transform-infrared (FT-IR) spectrometry, X-ray diffraction (XRD), and specific surface area measurements (BET). The results showed that the hydroxyl and carboxyl groups coexisted in the precipitate and a perfect solid solution was gradually formed with an increase in calcination temperature. The physisorbed water was lost from 100 to 170 ℃, hydroxyl groups were removed from 250 to 300 ℃, and the carboxyl groups were eliminated from420 to 500 ℃. A structure model was further proposed to understand the Ce0.65Zr0.25Y0.1O1.95 structure evolution process in depth.
- CeO2-ZrO2-Y2O3,
- Structure evolution,
- Oxidation-coprecipitation
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沈阳化工大学材料科学与工程学院沈阳 110142

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Structure Evolution Process of Ce0.65Zr0.25Y0.1O1.95 Prepared by Oxidation-Coprecipitation Method

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通讯作者: 陈斌, bchen63@163.com

Structure Evolution Process of Ce_0.65Zr_0.25Y_0.1O_1.95 Prepared by Oxidation-Coprecipitation Method