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Open AccessArticle

Formation of a Pd/MgO Structured Catalyst for the Aqueous Oxidation of Silane to Silanol

by Jun Zhou 1, Xiaoqing Cao 1, Hongna Wang 1 and Song Li 1,2,*
1
Key Lab for Anisotropy and Texture of Materials (MoE), School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
2
Research Center for Metallic Wires, Northeastern University, Shenyang 110819, China
*
Author to whom correspondence should be addressed.
Catalysts 2019, 9(10), 834; https://doi.org/10.3390/catal9100834
Received: 17 September 2019 / Revised: 30 September 2019 / Accepted: 30 September 2019 / Published: 4 October 2019
The catalytic oxidation of silanes to produce silanols using water as an oxidant at mild temperatures is a major challenge in Si-H activation. Highly efficient and easy-to-recycle catalysts based on Pd nanoparticles are in high demand. In this study, Pd nanoparticles embedded in an MgO porous overlayer on an Mg plate as a structured catalyst was prepared by the plasma electrolyte oxidation (PEO) technique. The Pd/MgO catalyst is strongly anchored to the MgO plate, building a structured catalyst. Fabrication parameters such as the temperature of the electrolyte and applied voltage significantly influenced the structure of the obtained Pd/MgO catalyst and in turn its catalytic activity. The catalytic activities of Pd/MgO were evaluated by activation of a Si-H bond for catalyzing the aqueous oxidation of silanes to silanol at mild temperatures. The catalytic activity of Pd nanoparticles is favored by their electro-deficient state due to influence from the MgO substrate. The Pd/MgO catalyst exhibits good performance stability during recycling. This work paves the way for fabricating structured catalysts with long-term stability and enhanced metal–oxide interaction. View Full-Text
Keywords: structured catalyst; Pd nanoparticles; metal–oxide interaction; silanol structured catalyst; Pd nanoparticles; metal–oxide interaction; silanol
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Zhou, J.; Cao, X.; Wang, H.; Li, S. Formation of a Pd/MgO Structured Catalyst for the Aqueous Oxidation of Silane to Silanol. Catalysts 2019, 9, 834.

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