| 贯通孔道网络结构大孔Al2O3催化材料的制备 |
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| 引用本文： | 王晓冬,仪桂云,刘豫.贯通孔道网络结构大孔Al2O3催化材料的制备[J].高等学校化学学报,2009,30(2):349-354. |
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| 作者姓名： | 王晓冬 仪桂云 刘豫 |
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| 作者单位： | 河南理工大学材料科学与工程学院,焦作,454003 |
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| 基金项目： | 河南理工大学博士科研启动基金 |
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| 摘 要： | 采用模板法制备了具有贯通孔道网络结构的大孔Al2O3催化材料. 为确保模板材料的体积分数低于74%时Al2O3孔道的贯通, 设计并实现了模板聚苯乙烯(PS)微球先胶凝再与催化材料Al2O3纳米颗粒复合的制备路线. 通过PS微球悬浮液的流变性表征凝胶状态的形成. 实验结果表明, 加入适当浓度的硝酸铝溶液后PS微球悬浮液出现了由溶胶向凝胶的转变. 通过扫描电镜对大孔Al2O3催化材料的孔道结构进行表征, 结果表明, 与有序大孔材料相比大孔催化材料中孔配位数有所降低, 骨架厚度提高且具有贯通的孔道网络结构. 大孔结构抗压强度实验表明, 随着模板PS微球质量分数的降低, 机械强度明显提高.
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| 关 键 词： | 大孔催化材料 聚苯乙烯微球 纳米Al2O3颗粒 凝胶 |
| 收稿时间： | 2008-04-23 |
Preparation of Al_2O_3 Catalytic Material with Run-through-macropore Network Structure |
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| WANG Xiao-Dong,YI Gui-Yun,LIU Yu.Preparation of Al_2O_3 Catalytic Material with Run-through-macropore Network Structure[J].Chemical Research In Chinese Universities,2009,30(2):349-354. |
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| Authors: | WANG Xiao-Dong YI Gui-Yun LIU Yu |
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| Institution: | Institute of Materials Science and Engineering;Henan Polytechnic University;Jiaozuo 454003;China |
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| Abstract: | A new way to prepare Al2O3 catalytic material by template method was reported.This material has good mechanical strength and run-through-macropore network structure to carry catalysts.In order to guarantee the run-through of the macropores when the volume fraction of template polystyrene(PS)was below 74%,the modified polystyrene(PS)microspheres in suspension were gelled before they were compounded with the nanoparticles of Al2O3.Rheological test was used to characterize the gelating process of PS microspher... |
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| Keywords: | Macroporous catalytic material Polystyrene sphere Al2O3 nanoparticle Gel |
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