期刊
FUEL
卷 104, 期 -, 页码 22-27出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2010.03.008
关键词
Methanol; Oxidation; Dehydration; V2O5/Al2O3-ZrO2; Dimethoxymethane
资金
- National Basic Research Program of China [2006CB202504, 2009CB226101]
- National Natural Science Foundation of China [20676140]
- Chinese Academy of Sciences [KJCX2.YW.H16]
A bifunctional V2O5/ZrO2-Al2O3 catalyst of oxidation and dehydration was prepared by wet impregnation method and used in methanol oxidation. The redox, acidity and texture properties of the catalyst were characterized by N-2 sorption, H-2-TPR, NH3-TPD, and XRD. Under mild reaction conditions, V2O5/ZrO2-Al2O3 possesses reasonable acidic and redox properties and exhibits excellent catalytic performance in methanol oxidation with dimethoxymethane, methyl formate and formaldehyde as main products. The catalytic performance of V2O5/ZrO2-Al2O3 is dependent on the catalyst compositions and reaction temperature. V2O5(16.5 wt.%)/ZrO2(8.5 wt.%)-Al2O3 exhibits a good synergistic effect of the redox and acidic properties in the methanol oxidation; over it the selectivity to dimethoxymethane reaches 89.0% with the methanol conversion of 11.1% at 165 degrees C, while the selectivity to methyl formate is 30.0% with the methanol conversion of 66.1% at 215 degrees C. (C) 2010 Elsevier Ltd. All rights reserved.
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