Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7831640 | Acta Physico-Chimica Sinica | 2008 | 5 Pages |
Abstract
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 °C, hydroxyl groups were removed from 250 to 300 °C, and the carboxyl groups were eliminated from 420 to 500 °C. A structure model was further proposed to understand the Ce0.65Zr0.25Y0.1O1.95 structure evolution process in depth.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Lei Zhang, Lingmin Zheng, Jiaxiu Guo, Dongdong Wu, Maochu Gong, Jianli Wang, Yaoqiang Chen,