Comprehensive characterization of iron oxide containing mesoporous molecular sieve MCM-41
文献类型：期刊论文
| 作者 | Yuan, ZY ; Zhou, W ; Zhang, ZL ; Chen, Q ; Su, BL ; Peng, LM |
| 刊名 | NANOPOROUS MATERIALS III
 |
| 出版日期 | 2002 |
| 卷号 | 141页码:403 |
| 关键词 | FE2O3 NANOPARTICLES ELECTRON-MICROSCOPY CARBON NANOTUBES SILICATE CATALYSIS AREA |
| ISSN号 | 0167-2991 |
| 通讯作者 | Yuan, ZY: Chinese Acad Sci, Beijing Lab Electron Microscopy, Inst Phys, POB 2724, Beijing 100080, Peoples R China. |
| 中文摘要 | We have synthesized iron oxide-containing mesoporous silica MCM-41 by a direct route. This material has a significant microporousity, which might be related with the loading of iron oxide in the MCM-41 mesopores, though no crystalline phases of iron oxide were detected by XRD. Intensity deviations and extra bright intensity within the pores, as well as local superstructural phases within a large area, were observed in the TEM images. The position and area of such a crystalline phase could change during the successive electron beam exposure and resulted in a formation of a cycle. These phenomena imply the possible existence of small Fe2O3 nanocrystals loaded in the mesoporous silica materials with regular and oriented arrangement. EELS spectrum of the sample proves the existence of iron, but the chemical environment of iron in the MCM-41 silica should be different from that of bulk amorphous porous iron oxide. The small iron oxide crystals in the MCM-41 sample might be linked with silica wall through oxygen. Another possibility is that iron oxide reacts with silica during synthesis, causing the partial crystallization of the MCM-41 framework. In other words, microcrystals of iron oxide may exist in the silica matrix. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35008]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yuan, ZY,Zhou, W,Zhang, ZL,et al. Comprehensive characterization of iron oxide containing mesoporous molecular sieve MCM-41[J]. NANOPOROUS MATERIALS III,2002,141:403. |
| APA | Yuan, ZY,Zhou, W,Zhang, ZL,Chen, Q,Su, BL,&Peng, LM.(2002).Comprehensive characterization of iron oxide containing mesoporous molecular sieve MCM-41.NANOPOROUS MATERIALS III,141,403. |
| MLA | Yuan, ZY,et al."Comprehensive characterization of iron oxide containing mesoporous molecular sieve MCM-41".NANOPOROUS MATERIALS III 141(2002):403. |
入库方式： OAI收割
来源：物理研究所
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