The one-step oxidation of cyclohexane to KA-oil (a critical intermediate for ε-caprolactam and adipic acid synthesis) represents a formidable catalytic challenge. Herein, the highly stable Ce–Mn composite oxide (CeMnO x ) catalyst was prepared via the sol–gel method. Under optimal conditions, 7.7% cyclohexane conversion with 85.6% selectivity to KA-oil was acquired. Remarkably, CeMnO x retained its initial activity and structural integrity over 10 catalytic cycles. Comprehensive characterization revealed that the coexistence of multivalent M...
