Steam reforming of ethanol over metal-oxide-promoted Pt/SiO2 catalysts: Effects of strong metal-oxide interaction (SMOI)
Steam reforming of ethanol over metal-oxide-promoted Pt/SiO2 catalysts: Effects of strong metal-oxide interaction (SMOI)
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DOI：
10.1016/j.catcom.2010.09.022
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发表时间：
2010-11
影响因子：
3.7
通讯作者：
S. Ito;K. Tomishige
中科院分区：
文献类型：
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作者：
S. Ito;K. Tomishige
研究了金属氧化物促进的Pt/SiO2催化剂上H2还原后乙醇水蒸气重整反应。通过依次浸渍Pt（NO2）2（NH3）2的水溶液和V、Nb和Mo的金属络合物的水溶液来制备催化剂。在低温（393- 513 K）范围内，添加这些金属氧化物的乙醇转化率高于未添加金属氧化物的Pt/SiO2催化剂。在473 K下，Nb氧化物促进的Pt/SiO2催化剂的乙醇转化率最高，是未促进的Pt/SiO2催化剂的2.7倍。催化剂的表征结果表明，Pt金属颗粒的表面被NbOx覆盖。强金属氧化物相互作用（SMOI）的Pt-NbOx的效果增强乙醇水蒸气重整。
The steam reforming of ethanol over metal-oxide-promoted Pt/SiO2catalysts after H2reduction was investigated. The catalysts were prepared by sequential impregnation with an aqueous solution of Pt(NO2)2(NH3)2and aqueous solutions of metal complexes of V, Nb, and Mo. For a range of low temperatures (393–513K), the ethanol conversion achieved by adding these metal oxides was greater than that achieved when an un-promoted-Pt/SiO2catalyst was used. The highest ethanol conversion was achieved in the case of the Nb-oxide-promoted Pt/SiO2catalyst; in this case, the ethanol conversion was the highest and it was 2.7 times higher than that in the case of the un-promoted Pt/SiO2catalyst at 473K. The results of catalyst characterization suggest that the surface of Pt metal particles was covered by NbOx. The effects of strong metal-oxide interaction (SMOI) in Pt–NbOxenhanced the steam reforming of ethanol.