The preparation of a nitrogen-rich ordered mesoporous carbon (DNOMC) with three-dimensional cubic structure was established via carbonization of a green, inexpensive and safe deep eutectic solvent consisting of choline chloride salt and Dglucose in the presence of KIT-6 template for the first time. The materials were characterized by TEM, N 2 adsorption-desorption analysis, XPS, TGA, CHN, and FT-IR. The DNOMC was shown to be a powerful support for the immobilization of palladium nanoparticles. The Pd@DNOMC catalyst exhibited high activity in the selective aerobic oxidation of various activated and nonactivated primary and secondary benzylic as well as linear and cyclic aliphatic alcohols to the corresponding carboxylic acids and ketones in pure water under molecular oxygen. The catalyst system could successfully be reused at least ten times without any significant decrease in either activity or selectivity. It is worth noting that, the hot filtration strongly showed that the catalyst works in a boomerang-type catalyst pathway.

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Advantages of the novel protocol are: no need for dehydrating agents, azeotropic removal of water or catalysts.