| 钨磷酸碱金属盐气相光催化氧化甲醛的性能研究 |
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| 引用本文： | 尚静,朱永法. 钨磷酸碱金属盐气相光催化氧化甲醛的性能研究[J]. 复旦学报(自然科学版), 2003, 42(6): 903-905 |
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| 作者姓名： | 尚静 朱永法 |
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| 作者单位： | 清华大学,化学系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目(20071021) |
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| 摘 要： | 以钨磷酸为原料，制备了锂、钠、钾、铯的钨磷酸碱金属盐，用TEM及XRD技术对样品进行了结构及形貌测定，以甲醛的气相光催化降解反应为模拟反应，比较了钨磷酸碱金属盐样品的光催化活性，研究结果表明，样品焙烧后，晶相结构优于焙烧前，故而催化活性提高；同等条件下制备的样品，钨磷酸钾晶相结构趋于完美，且其粒径分布很均匀，光催化活性也好。
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| 关 键 词： | 钨磷酸 碱金属盐 光催化氧化 甲醛 杂多酸催化剂 |
| 文章编号： | 0427-7104(2003)06-0903-03 |
Photocatalytic Properties of Alkali Metal 12-Tungstophosphates over Gas-phase Photocatalytic Oxidation of Formaldehyde |
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| SHANG Jing,ZHU Yong-fa. Photocatalytic Properties of Alkali Metal 12-Tungstophosphates over Gas-phase Photocatalytic Oxidation of Formaldehyde[J]. Journal of Fudan University(Natural Science), 2003, 42(6): 903-905 |
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| Authors: | SHANG Jing ZHU Yong-fa |
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| Abstract: | Alkali metals (Li, Na, K and Cs)12-tungstophosphates were prepared and characterized by TEM and XRD techniques. Gas-phase photocatalytic oxidation of formaldehyde was used as a model reaction to evaluate the photocatalytic activity of the above 12-tungstophosphates. It is observed that the crystallization become well after calcining, which results in the higher photocatalytic activity of the samples. Kalium 12-tungstophosphate presents the best photocatalytic activity due to its perfect crystallization and well-degree of dispersing. |
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| Keywords: | 12-tungstophosphoric acid alkali metals photocatalytic oxidation formaldehyde |
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