“…In the conventional two-step process, phenol is firstly hydrogenated to cyclohexanol, and cyclohexanol is subsequently dehydrogenated to yield cyclohexanone. [13][14][15][16] Therefore, the one-step process, the selective hydrogenation of phenol to cyclohexanone, has a large number of advantages. It simplifies the reaction steps, improves the efficiency of the hydrogen utilization, reduces waste disposal, 3,[17][18][19] and avoids the difficult separation of phenol-cyclohexanol and phenolcyclohexanone azeotropes.…”