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| 论文编号: |
122214O120120356 |
| 第一作者所在部门: |
610组 |
| 中文论文题目: |
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| 英文论文题目: |
Influence of preparation method on the surface and catalytic properties of sulfatedvanadia–titania catalysts for partial oxidation of methanol
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| 论文题目英文: |
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| 作者: |
李德宝
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| 论文出处: |
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| 刊物名称: |
Fuel Processing Technology
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| 年: |
2012
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| 卷: |
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| 期: |
1 |
| 页: |
1-2 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
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| 摘要: |
Two types of sulfated vanadia–titania catalysts, VTS and SVT, were prepared by the rapid combustion method
and the impregnation method, respectively. The physicochemical properties of the catalysts were characterized
by SEM, XRD, Raman, BET, XPS, ICP-OES, H2-TPR-MS and NH3-TPD techniques. The catalytic activities
were evaluated to the partial oxidation of methanol to dimethoxymethane (DMM). The results showed
that the VTS catalyst consisted of nano-particles and exhibited pore structure. While, the morphology of
the SVT catalyst was coarse and irregularly shaped. Moreover, both vanadia and sulfate were highly dispersed
on VTS catalyst, while aggregated on SVT catalyst. And the highly dispersed vanadia and sulfate species increased
reducibility and acidic sites. As a result, VTS catalyst presented higher methanol conversion and
DMM selectivity than SVT catalyst, which was clearly related to the physicochemical state of vanadia and
both acidic and redox properties of the catalyst. |
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