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Abstract:
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In this work, platinum nanoparticles were dispersed on SBA-15 mesoporous material by incipient wetness method and the synthesized materials were characterized by XRD, TEM, EDX spectroscopies and N2 adsorption-desorption isotherm measurement.
The results indicated that 2D hexagonal ordered structure of SBA-15 was still maintained after grafting Pt on SBA-15 support and platinum nanoparticles existed both inside and outside the pore channels of SBA-15 material. Catalytic activity of these materials was tested in the aqueous phase D-glucose oxidation as a model reaction. The reaction was carried out in a glass reactor at atmospheric pressure, 80oC, air flow rate 20ml/minute, at pH 9. The results from HPLC-RID method showed that the pH has a profound effect in the platinum-catalyzed oxidation of glucose and high conversion of D-glucose with the highest selectivity to D-gluconic acid was performed with 1%Pt/SBA-15 catalyst. |