Catalyst for preparing phenol through benzene hydroxylation and preparation method
A benzene hydroxylation and catalyst technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor phenol selectivity and low benzene conversion rate, and achieve high selectivity and excellent preparation process Simple, environmentally friendly preparation process
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example 1
[0014] Example 1: 2mmolFeCl 3 / Preparation of activated carbon catalyst:
[0015] Weigh FeCl 3 ·6H 2 O solid 0.54g in a 100mL round bottom flask, add 20mL deionized water and stir until the solid dissolves, then add 10g of activated carbon and stir for 30min to obtain a mixture; then place the obtained mixture in a CEM microwave reactor, and then heat the mixture within 5min After reaching 70°C and carrying out 20min of microwave radiation, the mixture was evaporated to dryness, and the obtained sample was put into 100°C oven and dried overnight to obtain the catalyst;
[0016] The catalyst obtained above is used in the phenol system prepared by hydroxylation of benzene, the reaction temperature is 60°C, the amount of catalyst is 0.4g, the consumption of benzene is 1mL, the consumption of solvent acetonitrile is 15mL, the consumption of 30% hydrogen peroxide is 3mL, and the reaction time for 7h. Product analysis results: the conversion rate of benzene was 24.9%, and ...
example 2
[0017] Example 2: 4mmolFeCl 3 / Preparation of activated carbon catalyst:
[0018] Weigh FeCl 3 ·6H 2 O solid 1.08g in a 100mL round bottom flask, add 20mL deionized water and stir until the solid dissolves, then add 10g of activated carbon and stir for 30min to obtain a mixture; then place the obtained mixture in a CEM microwave reactor, and then heat the mixture within 5min After reaching 70°C and carrying out 20min of microwave radiation, the mixture was evaporated to dryness, and the obtained sample was put into 100°C oven and dried overnight to obtain the catalyst;
[0019] The catalyst obtained above is used in the phenol system prepared by hydroxylation of benzene, the reaction temperature is 60°C, the amount of catalyst is 0.4g, the consumption of benzene is 1mL, the consumption of solvent acetonitrile is 15mL, the consumption of 30% hydrogen peroxide is 3mL, and the reaction time for 7h. Product analysis results: the conversion rate of benzene was 28.4%, and...
example 3
[0020] Example 3: 6mmolFeCl 3 / Preparation of activated carbon catalyst:
[0021] Weigh FeCl 3 ·6H 2 O solid 1.62g in a 100mL round bottom flask, add 20mL deionized water and stir until the solid dissolves, then add 10g of activated carbon and stir for 30min to obtain a mixture; then place the obtained mixture in a CEM microwave reactor, and then heat the mixture within 5min After reaching 70°C and carrying out 20min of microwave radiation, the mixture was evaporated to dryness, and the obtained sample was put into 100°C oven and dried overnight to obtain the catalyst;
[0022] The catalyst obtained above is used in the phenol system prepared by hydroxylation of benzene, the reaction temperature is 60°C, the amount of catalyst is 0.4g, the consumption of benzene is 1mL, the consumption of solvent acetonitrile is 15mL, the consumption of 30% hydrogen peroxide is 3mL, and the reaction time for 7h. Product analysis results: the conversion rate of benzene was 34.1%, and...
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