| A Study on the Thermal Stability of La_2O_3-TiO_2 Supports |
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| 作者姓名： | 郑柏存 汪仁 |
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| 作者单位： | Research Institute of Catalysis East China University of Chemical Technology，Shanghai 200237，China，Research Institute of Catalysis，East China University of Chemical Technology，Shanghai 200237，China |
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| 摘 要： | In this paper,various techniques including BET,XRD,SEM and XPS were used to study the sintering ofpure and La_2O_3-doped titania.The experimental results show that sintering of titania proceeds via volume diffu-sion.Adding of lanthanum oxide decreases the rate of sintering and hinders the phase transition from anatase torutile crystal by strong surface interaction between the mixed crystals(La_4Ti_9O_(24),La_(0.66)TiO_(2.99))and TiO_2.
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A Study on the Thermal Stability of La_2O_3-TiO_2 Supports |
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| Zheng Bai-Cun Wang Ren.A Study on the Thermal Stability of La_2O_3-TiO_2 Supports[J].Journal of Rare Earths,1991(3). |
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| Authors: | Zheng Bai-Cun Wang Ren |
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| Abstract: | In this paper,various techniques including BET,XRD,SEM and XPS were used to study the sintering of pure and La_2O_3-doped titania.The experimental results show that sintering of titania proceeds via volume diffu- sion.Adding of lanthanum oxide decreases the rate of sintering and hinders the phase transition from anatase to rutile crystal by strong surface interaction between the mixed crystals(La_4Ti_9O_(24),La_(0.66)TiO_(2.99))and TiO_2. |
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| Keywords: | La_2O_3 TiO_2 Sintering kinetics Thermal stability Anchoring effect |
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