Mechanochemical preparation of advanced catalytically active bifunctional 
Pd-containing nanomaterials for aqueous phase hydrogenation

Al-Naji, Majd; Balu, Alina M.; Roibu, Anca; Goepel, Michael; Einicke, Wolf-Dietrich; Luquec, Rafael; Glaeser, Roger

doi:10.1039/c4cy01174k

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Mechanochemical preparation of advanced catalytically active bifunctional Pd-containing nanomaterials for aqueous phase hydrogenation

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Al-Naji, M., Balu, A. M., Roibu, A., Goepel, M., Einicke, W.-D., Luquec, R., et al. (2015). Mechanochemical preparation of advanced catalytically active bifunctional Pd-containing nanomaterials for aqueous phase hydrogenation. Catalysis Science & Technology, 5(4), 2085-2091. doi:10.1039/c4cy01174k.

Cite as: https://hdl.handle.net/21.11116/0000-0005-7531-0

Abstract

The preparation of supported Pd nanoparticles on porous materials (Al-SBA-15 and Al-MCF) was successfully achieved using a simple, fast and efficient reactive milling (mechanochemical) method. Upon preparation, catalysts were characterized by N-2 physisorption, elemental analysis, transmission electron microscopy (TEM) and X-ray diffraction (XRD). The catalytic activity of different Pd/Al-SBA-15 and Pd/Al-MCF materials was investigated in the hydrogenation of p-nitrophenol (PNP) to p-aminophenol (PAP) using NaBH4 as a reducing agent. Significant differences in catalytic activity for the prepared catalysts were observed, with a superior catalytic activity of Pd/Al-MCF as compared to Pd/Al-SBA-15. Furthermore, investigations on external mass-transfer limitations of the reaction conducted with two selected supported Pd catalysts were conducted and discussed.