Synthesis of Pd-Ag on Charcoal Catalyst for Aerobic Benzyl Alcohol Oxidation Using [Hmim][PF₆]

Abstract

Pd on charcoal particles were prepared by wet impregnation to develop commercial catalyst for aerobic benzyl alcohol oxidation. Especially, one of room temperature ionic liquids, [Hmim][PF6], was used as an effective solvent in the synthesis to improve the metal dispersion of the catalysts. Among the Pd/Charcoal with various Pd concentrations, 7.5 wt% catalyst showed the higher catalytic activity and stability. Moreover, Ag was used as a promoter with various ratios in catalyst preparation. Under identical reaction conditions, the catalyst with 9 : 1 of Pd and Ag weight ratios was most active due to higher metal dispersion.

Kinetics and Mechanism of the Oxidation of Substituted Benzyl Alcohols by (C9H7NH)2Cr2O7

“…선택적인 산화제는 화합물 내의 다른 알코올의 히드록시기만을 보호했다가 원래대로 전환시키는 과정을 줄이고, 분리정제에 따른 수율 감소을 줄일 수 있어 알코올을 포함한 유기화합물의 합성과정에서 응용할 수 있다. 보고된 알코올의 산화제에 관한 연구을 보면, Kim등은 [1] Ag/TiO3를 제조하였고, Cho등은 [2][3][4] Pd/TiO2, Pd-Ag 등을 제조하였다. Lokhande등은 [5] CuCl2를 이용하여 선택적으로 산화시켰고, Kim등은 [6] Ru를 도입한 TiO2를 합성하여 산화반응에 이용하였다.…”