An electroless deposition technique for the synthesis of highly active and nano-sized Pd particles on silica nanosphere

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• 作者：Shusuke Okada ; Takashi Kamegawa ; Kohsuke Mori ; Hiromi Yamashita ; ^{yamashita@mat.eng.osaka-u.ac.jp}
• 关键词：Electroless deposition ; Pd supported catalyst ; Hydrogenation of nitrobenzene ; Direct synthesis of hydrogen peroxide
• 刊名：Catalysis Today
• 出版年：2012
• 出版时间：20 May, 2012
• 年：2012
• 卷：185
• 期：1
• 页码：109-112
• 全文大小：522 K

文摘

A simple methodology to synthesize uniform and nano-sized Pd particles supported on silica support has been developed by the electroless deposition technique using Sn²⁺ ion, in which Pd precursor can be interacted directly with the Sn²⁺ ion, and subsequently transformed into Pd nanoparticles. Characterization by TEM analysis proved that the sizes of the Pd nanoparticles using the electroless deposition technique (eld-Pd/SiO₂(Sn)) were quite uniform with smaller size compared with that prepared by the conventional impregnation method (imp-Pd/SiO₂). Their catalytic applications for the hydrogenation of nitrobenzene and the direct synthesis of H₂O₂ from H₂ and O₂ gases were investigated and it is demonstrated that eld-Pd/SiO₂(Sn) prepared by the electroless deposition technique was shown to perform significantly better activity than the imp-Pd/SiO₂ owing to its uniform and nano-sized Pd particles.