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首页> 外文期刊>Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications >Effect of strong metal-oxide interaction on low-temperature ethanol reforming over Fe-promoted Rh/SiO2 catalyst
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Effect of strong metal-oxide interaction on low-temperature ethanol reforming over Fe-promoted Rh/SiO2 catalyst

机译：强金属氧化物相互作用对Fe促进RH / SiO2催化剂的低温乙醇重整的影响

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摘要

An Fe-promoted Rh/SiO2 catalyst (Fe + Rh/SiO2) was investigated in terms of the strong metal-oxide interaction (SMOI) between Rh metal and Fe oxide (FeOx) and its application to low-temperature ethanol reforming. Fe + Rh/SiO2 was prepared by a conventional co-impregnation method followed by high-temperature calcination in air at 973 K. For low-temperature ethanol reforming, Fe + Rh/SiO2 was subjected to low-temperature reduction with hydrogen at 573 K, and exhibited enhanced dehydrogenation of ethanol. The generation of carbon monoxide and methane byproducts was suppressed by the SMOI between Rh and FeOx, which inhibited acetaldehyde decomposition. Moreover, high-temperature reduction of Fe + Rh/SiO2 with hydrogen at 773 K (HTR) significantly enhanced steam reforming of ethanol due to interaction between the Fe-Rh alloy and FeOx. These results will lead to efficient utilization of rare and active precious metals by the addition of cheap iron oxide, and promise efficient production of hydrogen and acetaldehyde as basic chemicals from bioethanol.
机译：研究了铁促进的Rh/SiO2催化剂（Fe+Rh/SiO2）在低温乙醇重整反应中的应用。Fe+Rh/SiO2是通过常规的共浸渍方法制备的，随后在973 K的空气中高温煅烧。对于低温乙醇重整，Fe+Rh/SiO2在573 K的温度下用氢气进行低温还原，并表现出乙醇脱氢的增强。Rh和FeOx之间的SMOI抑制了一氧化碳和甲烷副产物的生成，抑制了乙醛分解。此外，由于Fe-Rh合金与FeOx之间的相互作用，在773k（HTR）下用氢气高温还原Fe+Rh/SiO2显著增强了乙醇的蒸汽重整。这些结果将导致通过添加廉价的氧化铁来有效利用稀有和活性贵金属，并有望从生物乙醇中高效生产氢和乙醛作为基本化学品。

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