The Effect of Sibunit Carbon Surface Modification with Diazonium Tosylate Salts of Pd and Pd-Au Catalysts on Furfural Hydrogenation

Herein, we investigated the effect of the support modification (Sibunit carbon) with diazonium salts of Pd and Pd-Au catalysts on furfural hydrogenation under 5 bars of H2 and 50 °C. To this end, the surface of Sibunit (Cp) was modified with butyl (Cp-Butyl), carboxyl (Cp-COOH) and amino groups (Cp-...

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Bibliographic Details
Published in:Materials 2022-07, Vol.15 (13), p.4695
Main Authors: German, Dmitrii, Kolobova, Ekaterina, Pakrieva, Ekaterina, Carabineiro, Sónia A. C., Sviridova, Elizaveta, Perevezentsev, Sergey, Alijani, Shahram, Villa, Alberto, Prati, Laura, Postnikov, Pavel, Bogdanchikova, Nina, Pestryakov, Alexey
Format: Article
Language:English
Subjects:
Activated carbon
Carbon
Catalysts
Chemical synthesis
Composite materials
Fourier transforms
Functional groups
Furfural
Gold
High resolution electron microscopy
Hydrogenation
Inductively coupled plasma
Infrared spectroscopy
Morphology
Nanoparticles
Nitrogen
Nitrogen plasma
Palladium
Phenols
Photoelectrons
Polyvinyl alcohol
Porous materials
Selectivity
Surface chemistry
X ray photoelectron spectroscopy
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Summary:Herein, we investigated the effect of the support modification (Sibunit carbon) with diazonium salts of Pd and Pd-Au catalysts on furfural hydrogenation under 5 bars of H2 and 50 °C. To this end, the surface of Sibunit (Cp) was modified with butyl (Cp-Butyl), carboxyl (Cp-COOH) and amino groups (Cp-NH2) using corresponding diazonium salts. The catalysts were synthesized by the sol immobilization method. The catalysts as well as the corresponding supports were characterized by Fourier transform infrared spectroscopy, N2 adsorption-desorption, inductively coupled plasma atomic emission spectroscopy, high resolution transmission electron microscopy, energy dispersive spectroscopy, X-ray diffraction, Hammet indicator method and X-ray photoelectron spectroscopy. The analysis of the results allowed us to determine the crucial influence of surface chemistry on the catalytic behavior of the studied catalysts, especially regarding selectivity. At the same time, the structural, textural, electronic and acid–base properties of the catalysts were practically unaffected. Thus, it can be assumed that the modification of Sibunit with various functional groups leads to changes in the hydrophobic/hydrophilic and/or electrostatic properties of the surface, which influenced the selectivity of the process.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15134695