Method for catalyzing benzene and hydrogen peroxide to synthesize phenol by using Cu-loading Schiff base
A technology for catalyzing benzene and hydrogen peroxide with a Schiff base, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of low catalyst synthesis yield and selectivity, and achieve easy operation , high phenol yield, and the effect of increasing phenol yield
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example 1
[0021] Based on 1g of MCM-41, the catalyst Cu(salen) / MCM-41 was synthesized according to the following steps. 1g of MCM-41 molecular sieve was suspended in 15mL of anhydrous toluene, 5mL of 3-aminopropyltriethoxysilane was added, and nitrogen protection , stirred and refluxed for 48h, filtered, washed with toluene and diethyl ether in turn, and dried in vacuo to obtain 1.3g of MCM-41-NH 2 Molecular sieve. 0.45g Cu(salen) dissolved in 60mL CHCl 3 In, add 1g MCM-41-NH 2 , the suspension was stirred at room temperature for 24 h, filtered, dried, extracted with methanol until the solution no longer changed color, and dried in vacuum to obtain Cu(salen) / MCM-41.
[0022] In the there-necked flask, the mass ratio of 2.16% Cu(salen) / MCM-41, 0.51% triphenylphosphine, 8.65% benzene, 76.2% acetonitrile, 13.0% 30% H 2 o 2 , heated to 65°C, and refluxed for 6h under magnetic stirring. After the reaction was completed, it was cooled to room temperature, the catalyst was filtered, and t...
example 2
[0024] Based on 1g of MCM-41, the catalyst Cu(saloph) / MCM-41 was synthesized according to the following steps. 1g of MCM-41 molecular sieve was suspended in 15mL of anhydrous toluene, 5mL of 3-aminopropyltriethoxysilane was added, and under nitrogen protection , stirred and refluxed for 10h, filtered, washed with toluene and diethyl ether in turn, and dried in vacuum to obtain 1.3g MCM-41-NH 2 Molecular sieve. 0.45g Cu(saloph) dissolved in 60mL CHCl 3 In, add 1gMCM-41-NH 2 , the suspension was stirred at room temperature for 24 h, filtered, dried, extracted with methanol until the solution no longer changed color, and dried in vacuo to obtain Cu(saloph) / MCM-41.
[0025] Add mass ratio to the there-necked flask and be 2.16% Cu(saloph) / MCM-41, 0.51% triphenylphosphine, 8.65% benzene, 76.2% acetonitrile, 13.0% 30% H 2 o 2 , heated to 65°C, and refluxed for 6h under magnetic stirring. After the reaction was completed, it was cooled to room temperature, the catalyst was filter...
example 3
[0027]Based on 1g of SBA-15, the catalyst Cu(saldiamp) / SBA-15 was synthesized according to the following steps. 1g of SBA-15 molecular sieve was suspended in 15mL of anhydrous toluene, 5mL of 3-aminopropyltriethoxysilane was added, and nitrogen protection , stirred and refluxed for 10 h, filtered, washed with toluene and diethyl ether in turn, and dried in vacuum to obtain 1.3 g of SBA-15-NH 2 Molecular sieve. 0.38g Cu(saldiamp) dissolved in 60mL CHCl 3 In, add 1g SBA-15-NH 2 , the suspension was stirred at room temperature for 24 h, filtered, dried, extracted with methanol until the solution no longer changed color, and dried in vacuo to obtain Cu(saldiamp) / SBA-15.
[0028] Add mass ratio to the there-necked flask and be 2.16% Cu (saldiamp) / SBA-15, 0.51% triphenylphosphine, 8.65% benzene, 76.2% acetonitrile, 13.0% 30% H 2 o 2 , heated to 65°C, and refluxed for 6h under magnetic stirring. After the reaction was completed, it was cooled to room temperature, the catalyst wa...
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