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還原氧化石墨烯應(yīng)用于多相催化,芳香硝基化合物氫化作用 已有1人參與
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本文制備了乙二醇還原的氧化石墨烯做為載體,Pt/RGO-EG催化劑,并與水合肼還原的石墨烯載體,活性炭載體,碳納米管載體的催化劑進(jìn)行性能對比。得出Pt/RGO-EG催化劑低耗能,環(huán)境友好,可高效產(chǎn)出芳香族的胺類。 本文提到關(guān)于石墨烯-金屬的研究主要集中在納米電子傳感器,電極,電池,超級電容器。只有較少的研究石墨烯做為多相催化反應(yīng)的載體。 乙二醇還原氧化石墨烯做為載體,不但提高了催化劑的活性,而且提高了芳香硝基化合物加氫的產(chǎn)率。這種制備方法簡單易操作,可回收利用,相比CNTs做為載體更廉價。氧化石墨烯和氧化石墨烯復(fù)合物將來在多相催化中有很大的利用潛力。 題目:Platinum supported on reduced graphene oxide as a catalyst for hydrogenation of nitroarenes 摘要:Reduced graphene oxide (RGO)-supported platinum (Pt) catalyst was prepared by simple ethylene glycol (EG) reduction and used for hydrogenation of nitroarenes. Characteriza-tions showed that EG as a reductant exhibited more advantages than the widely used hydrazine hydrate to fabricate monodispersed, small sized Pt nanoparticles on the surface of RGO. The yield of aniline over the Pt/RGO-EG catalyst reached 70.2 mol-AN/(mol-Pt min) at0oC, which is 12.5 and 19.5 times higher than that of multi-walled carbon nanotube- and active carbon-supported Pt catalysts, respectively. When the reaction temperature was increased to 20o C, the catalytic activity of Pt/RGO-EG jumped to 1138.3 mol-AN/(mol-Ptmin), and it was also extremely active for the hydrogenation of a series of nitroarenes. The unique catalytic activity of Pt/RGO-EG is not only related to the well dispersed Pt clusters on the RGO sheets but also the well dispersion of Pt/RGO-EG in the reaction mixture. |
石墨烯知識匯總 | 石墨烯+二氧化鈦 | 氯苯 催化 |

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專家經(jīng)驗(yàn): +3748 |
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今天看見這篇文獻(xiàn)入選: The most downloaded articles from SciVerse ScienceDirect in the last 90 days. http://www.journals.elsevier.com/carbon/most-read-articles/ |
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