|
|
| 论文编号: |
122214O120110110 |
| 第一作者所在部门: |
902组 |
| 中文论文题目: |
IN SITU FT-IR STUDY OF DIMETHYL ETHER ADSORPTION AND DESORPTION OVER MnCl2 MODIFIED H4SiW12O40/SiO2 CATALYSTS
|
| 英文论文题目: |
IN SITU FT-IR STUDY OF DIMETHYL ETHER ADSORPTION AND DESORPTION OVER MnCl2 MODIFIED H4SiW12O40/SiO2 CATALYSTS
|
| 论文题目英文: |
|
| 作者: |
韩怡卓
|
| 论文出处: |
|
| 刊物名称: |
|
| 年: |
2011
|
| 卷: |
0 |
| 期: |
0 |
| 页: |
84 |
| 联系作者: |
韩怡卓 |
| 收录类别: |
|
| 影响因子: |
|
| 摘要: |
Dimethyl ether (DME), with CH3-, CH3O-, CH3OCH2- as the
basic groups has been expected as a starting material for value added
chemicals for its easy availability, low price, like methanol.
Investigation on DME molecule activation is the fundamental for
exploring potential reaction route of DME conversion.
The DME adsorption on Al2O3
[1], HZSM-5[2], ZrO2
[3] and CeO2
[4] using in situ FT-IR has been reported. Surface methoxy species are
regarded as key intermediates in DME conversion.
Our group has recently carried out the direct oxidation of DME
to DMM[5, 6, 7] over Mn modified H4SiW12O40 catalysts and Cs
modified H3PW12O40. The previous results reported how both Mn, Cs
modification to heteropolyacids and the catalyst preparation method
impacted DMM synthesis. For the reaction mechanism of DME
oxidation to DMM, we have proposed that surface methoxy species
could be the intermediates.
There have been no reports about in situ FT-IR results of DME
molecule adsorption and activation over the H4SiW12O40/SiO2 and
MnCl2 modified H4SiW12O40/SiO2 catalysts.
In the present study, DME molecule adsorption and the
formation of surface methoxy species on MnCl2 modified
H4SiW12O40/SiO2 have been investigated using in-situ infrared
spectroscopy. |
| 英文摘要: |
|
| 外单位作者单位: |
|
| 备注: |
|
关闭窗口 |
|
|
|
