Title Pt nanoparticles-loaded and noble-metal-free, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane Short title Noble-metal-free, mesoporous oxides for CO2 activation reactions Article type Full Length Article

Extremely high specific surface area mesoporous carbon supported Pd nanoparticle catalysts were prepared with both impregnation and polyol-based sol methods. The silica template used for the synthesis of mesoporous carbon was removed by both NaOH and HF etching. Pd/mesoporous carbon catalysts synthesized with the impregnation method has as high specific surface area as 2250 m 2 /g. In case of NaOH etched impregnated samples, the turnover frequency of cyclohexene hydrogenation to cyclohexane at 313 K was obtained ~14 molecules•site -1 •s -1 . Specific surface area of HF etched samples was higher compared to NaOH etched samples. However, catalytic activity was ~3-6 times higher on NaOH etched samples compared to HF etched samples which can be attributed to the presence of sodium and surface hydroxyl-groups of the catalysts etched with NaOH solution.

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