Characterizations and Catalytic Properties of Chromium Silicalite-2 Prepared by Direct Hydrothermal Synthesis and Impregnation
文献类型：期刊论文
| 作者 | Wang XL(王晓来) ; Wang XL(王晓来)
|
| 刊名 | Catal. Lett.
 |
| 出版日期 | 2010 |
| 卷号 | 135页码:233-240 |
| 关键词 | Cr–Si-2 Ethane Carbon dioxide Dehydrogenation Cr/Si-2 |
| ISSN号 | 1011-372X |
| 通讯作者 | 王晓来 |
| 中文摘要 | A series of Cr–Si-2 molecular sieves have been prepared by direct hydrothermal synthesis using tetrabutylammonium hydroxide as a template. Cr/Si-2 was also prepared by conventional impregnation. The synthesized materials were characterized by X-ray diffraction (XRD), N2 adsorption (-196 C), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and diffuse reflectance (UV–vis) spectroscopic measurements. Cr–Si-2 sample with lower content of chromium (ca. 1.28wt%) exhibits excellent catalytic performance for the dehydrogenation of ethane with carbon dioxide, giving 45.5% ethylene yield with a selectivity of 87.9% at 650 C. The catalytic performance of Cr/Si-2(1.31%) was slightly lower to that of Cr–Si-2(1.28%). Characterization indicates that the chromium species with high oxidation state on the Cr–Si-2(1.28%) and Cr/Si-2(1.31%) were partly reduced to aggregated Cr(III) during the dehydrogenation of ethane with carbon dioxide, which could account for their different catalytic behaviors in this reaction. |
| 学科主题 | 多相催化 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000275781700012 |
| 公开日期 | 2012-09-21 |
| 源URL | [http://210.77.64.217/handle/362003/443]  |
| 专题 | 兰州化学物理研究所_OSSO国家重点实验室 |
| 通讯作者 | Wang XL(王晓来); Wang XL(王晓来) |
| 推荐引用方式 GB/T 7714 | Wang XL,Wang XL. Characterizations and Catalytic Properties of Chromium Silicalite-2 Prepared by Direct Hydrothermal Synthesis and Impregnation[J]. Catal. Lett.,2010,135:233-240. |
| APA | 王晓来,&王晓来.(2010).Characterizations and Catalytic Properties of Chromium Silicalite-2 Prepared by Direct Hydrothermal Synthesis and Impregnation.Catal. Lett.,135,233-240. |
| MLA | 王晓来,et al."Characterizations and Catalytic Properties of Chromium Silicalite-2 Prepared by Direct Hydrothermal Synthesis and Impregnation".Catal. Lett. 135(2010):233-240. |
入库方式： OAI收割
来源：兰州化学物理研究所
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