Solvent effects are important for the solution preparation of nanoscale metal
materials, in which the sizes and properties of the nanomaterials are greatly
influenced by the solvents. In this study, a series of Pd/XC-72 catalysts were
synthesized by a facile solvothermal method in solvents with different numbers
of hydroxyl groups, including ethanol, ethylene glycol, and glycerine. The
as-prepared catalysts Pd/XC-72(EA), Pd/XC-72(EG) and Pd/XC-72(GI) were
characterized by XRD, TEM, TGA, ICP-MS and multipoint nitrogen adsorption-desorption experiments. It was found that Pd/XC-72(GI) had the highest
metallic dispersion and the smallest particle size (4.9 nm). Furthermore, Pd/XC-72(GI) exhibited the best catalytic performance for solvent-free selective oxidation
of benzyl alcohol while the catalytic activities of Pd/XC-72 catalysts decreased
in the order: Pd/XC-72(GI) > Pd/XC-72(EG) > Pd/XC-72(EA).
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