Synthesis, Characterization, and Relative Study on the Catalytic Activity of Zinc Oxide Nanoparticles Doped MnCO₃, –MnO₂, and –Mn₂O₃ Nanocomposites for Aerial Oxidation of Alcohols

Table 4

The effect of the catalyst 1% ZnO_x–MnCO₃ amount on the catalytic efficiency.

Entry	Catalyst amount (mg)	Conv. (%)	Sp. activity (mmol·g^−1·h^−1)	TON	TOF (h^−1)	Sel. (%)
1	100	40.58	97.39	66.05	792.60	>99
2	200	56.13	67.36	45.67	548.04	>99
3	300	70.98	56.78	38.51	462.12	>99
4	400	86.01	51.61	34.96	419.52	>99
5	500	100	48.0	32.55	390.6	>99

Reaction conditions: 2 mmol of 1-phenylethanol, calcination temperature at 300°C, oxygen with rate 20 mL/min, reaction temperature at 100°C, 10 mL of toluene, and 5 min of reaction time.