| 微波法制备ZrO2/Al2O3复合载体及其性能的研究 |
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| 引用本文： | 李凝,罗来涛.微波法制备ZrO2/Al2O3复合载体及其性能的研究[J].材料导报,2005,19(12):127-128,135. |
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| 作者姓名： | 李凝 罗来涛 |
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| 作者单位： | 南昌大学化学系,南昌,330047;桂林工学院材料与化学工程系,桂林,541004;南昌大学化学系,南昌,330047 |
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| 基金项目： | 广东省博士启动基金，江西省教育厅科研项目 |
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| 摘 要： | 采用真空浸溃和微波技术在经过扩孔处理的Al2O3载体上制备ZrO2/Al2O3复合载体.经XRD、DSC-TG、TPD等测试表明:ZrO2能单层分散在Al2O3表面,分散阈值为0.242gZrO2/gAl2O3;在微波条件下,ZrO2的单层分散没有明显改变Al2O3的孔径分布,复合载体具有较好的热稳定性,ZrO2单层分散的复合载体表面具有酸、碱性质,碱性中心数大于非单层分散的复合载体,同时单层分散的复合载体具有较大的比表面积和适宜的孔径分布.初步证明,Al2O3能诱导单层分散ZrO2产生新的碱性中心.
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| 关 键 词： | 微波技术 复合载体 分散阈值 |
Preparation with Microwave Techniques and Performances of ZrO2/Al2O3 Composite Supports |
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| LINing,LUO Laitao.Preparation with Microwave Techniques and Performances of ZrO2/Al2O3 Composite Supports[J].Materials Review,2005,19(12):127-128,135. |
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| Authors: | LINing LUO Laitao |
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| Affiliation: | 1, Department of Chemistry,Nanchang University,Nanchang 330047; 2, Department of Material and Chemical Engineering,Guilin Insitute of Technology,Guilin 541004 |
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| Abstract: | The microwave heating is applied to the preparation of ZrOz supported Al2O3. The obtained ZrO2/Al2O3 materials are characterized by XRD,DSC-TG and TPD et al investigations,ZrO2 is dispersed as monolayer on the surface of Al2O3 support with the dispersion threshold 0. 242g ZrO2/gAl2O3. Under the microwave, monolayer dispersion of ZrO2 on the surface of Al2O3 shows the composite supports exists not only independently located acid and base sites, responsible for the adsorption of NH3 and CO2, but the base amount is larger than acid amount. The composite supports have better thermal stability and proper pore distribution. |
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| Keywords: | microwave techniques composite support dispersion threshold |
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