| 掺Ag对氧化锰八面体分子筛催化CO氧化性能的影响 | |
| 胡蓉蓉 ; 程易 ; 谢兰英 ; 王德峥 ; HU Rongrong ; CHENG Yi ; XIE Lanying ; WANG Dezheng | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 氧化锰 八面体分子筛 一氧化碳 氧化 manganese oxide octahedral molecular sieve silver carbon monoxide oxidation O643.32 |
| 其他题名 | Effect of Doped Ag on Performance of Manganese Oxide Octahedral Molecular Sieve for CO Oxidation |
| 中文摘要 | 采用回流法在酸性介质中合成了掺杂贵金属Ag的氧化锰八面体分子筛(OMS-2).利用X射线衍射、低温N2吸附、透射电子显微镜及程序升温脱附(TPD)等技术对固体材料的结构进行了表征,考察了材料对CO氧化反应的催化性能,以及Ag的掺杂对该反应的影响.结果表明,合成的OMS-2材料属于cryptomelane一维隧道结构,适量Ag的掺杂使分子筛的有序性得到改善,孔径更均一.Ag的加入还能明显提高催化剂的反应活性.O2-TPD和CO-TPD实验表明,Ag的引入使材料对CO的吸附性能及晶格氧的扩散能力得到显著增强,这是提高催化剂对CO氧化催化能力的主要原因.; A series of Ag-doped manganese oxide octahedral molecular sieves(OMS-2) were synthesized by the reflux method in an acid medium.The structure of the catalysts was characterized by X-ray diffraction,N2 adsorption,transmission electron microscopy,and temperature-programmed desorption(TPD).The effect of the promoter Ag was deduced.The results showed that the catalysts have the typical cryptomelane structure with a one-dimensional channel.The doping with Ag resulted in Ag/OMS-2 catalysts with a higher specific surface area and narrower pore size distribution than OMS-2.The catalysts showed excellent catalytic activity for CO oxidation and the catalytic activity was increased after Ag introduction.O2-TPD and CO-TPD results showed that this was because the doping with Ag increased the rate of CO adsorption and the diffusion of lattice oxygen ions. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/64162]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 胡蓉蓉,程易,谢兰英,等. 掺Ag对氧化锰八面体分子筛催化CO氧化性能的影响[J],2010, 2010. |
| APA | 胡蓉蓉.,程易.,谢兰英.,王德峥.,HU Rongrong.,...&WANG Dezheng.(2010).掺Ag对氧化锰八面体分子筛催化CO氧化性能的影响.. |
| MLA | 胡蓉蓉,et al."掺Ag对氧化锰八面体分子筛催化CO氧化性能的影响".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论