화학공학소재연구정보센터
Applied Catalysis A: General, Vol.504, 373-380, 2015
Liquid phase oxidation of cyclohexane using bimetallic Au-Pd/MgO catalysts
A detailed study of the selective oxidation of cyclohexane has been performed using bimetallic gold palladium catalysts supported on magnesium oxide. Mono-metallic supported gold or palladium catalysts show limited activity for cyclohexane oxidation. However, a significantly enhanced catalytic performance is observed when supported gold palladium alloy catalysts are used for this particular reaction. This synergy is observed for alloys spanning a wide range of gold-to-palladium molar ratios. Mechanistic studies reveal a promotion effect that occurs from alloying palladium with gold on the supported catalyst, which significantly improves the homo-cleavage of the O-O bond in cyclohexyl hydroperoxide, an important intermediate species in cyclohexane oxidation. (C) 2015 Elsevier B.V. All rights reserved.