Preparation of Ruthenium Incorporated Heterogeneous Catalysts Using Hydroxyapatite as Catalytic Supports for Aerobic Oxidation of Alcohols

E-mail: joonbumpark@jbnu.ac.krReceived October 23, 2012, Accepted November 2, 2012Three different kinds of hydroxyapatites (HAPs) having different sizes and compositions are prepared byhydrothermal and molten salt syntheses. Using the ion exchange reactions, ruthenium ions are incorporated onthe surface of HAPs. The crystallinity, morphology and ruthenium contents are investigated by XRD, SEM,TEM and ICP. We found that smaller size of HAP having large amounts of ruthenium under ion exchangereaction shows higher catalytic activity for aerobic oxidation of alcohols.Key Words : Aerobic oxidation, Heterogeneous catalysts, Hydroxyapatite, SurfaceIntroductionTransformation of various functional groups with cleanand cost effective way has become a critical issue in syn-thetic chemistry. Particularly, the development of properrouts for alcohol oxidations into corresponding carbonylcompounds are one of the most important methodologiesboth academic and industrial aspects. Instead of the usage ofstoichiometric amounts of expensive and harmful oxidizingreagents, recently many of researchers have focused ondeveloping environmentally benign oxidation reactions byusing molecular oxygen (O