Phthalate type plasticizer hydrogenated catalyst preparation method thereof and application
A technology of phthalates and catalysts, which is applied in the preparation of carboxylate esters, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of complex preparation, high requirements for hydrogenation process conditions, and easy deactivation, and achieve the goal of preparing Simple, no by-products, mild reaction conditions
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[0021] Example 1
[0022] A method for preparing a catalyst for hydrogenation of phthalate plasticizers to produce cyclohexane dicarboxylate, the specific steps are as follows:
[0023] Weigh 1 g of sodium bicarbonate to prepare a 5% sodium bicarbonate solution, treat 10 g of alumina with it, stir well at room temperature, overnight at 110°C, dry, and grind; weigh 0.027 g of RuCl 3 ·XH 2 O (about 37% Ru), 0.382 g of Cu(NO 3 ) 2 ·3H 2 Dissolve O in 20 g of distilled water. After it is completely dissolved, spray the treated carrier into the dipping solution, stir for 2 h, immerse for 6 h, overnight at 110°C, dry, grind, and wash 4 times to remove Cl - , 110 ℃ overnight, drying, grinding to obtain the catalyst precursor; the prepared catalyst precursor is activated in a hydrogen atmosphere at normal pressure, temperature 100 ℃, time 10 h. The active component accounts for 0.1% of the total mass of the catalyst, and the auxiliary agent accounts for 1% of the total mass of the catalyst....
Example Embodiment
[0024] Example 2
[0025] A method for preparing a catalyst for hydrogenation of phthalate plasticizers to produce cyclohexane dicarboxylate, the specific steps are as follows:
[0026] Weigh 1 g of sodium carbonate to prepare a 2% sodium carbonate solution, treat 10 g of zirconia with it, stir evenly at room temperature, overnight at 110 ℃, dry, and grind; weigh 0.932 g of RuCl 3 ·XH 2 O (about 37% Ru), 5.244 g of Mn(NO 3 ) 2 ·4H 2 O was dissolved in 50 g of distilled water. After it was completely dissolved, spray the treated carrier into the dipping solution, stir for 2 h, immerse for 7 h, overnight at 110 ℃, dry, grind, and wash 4 times to remove Cl - , 110 ℃ overnight, drying, grinding to obtain the catalyst precursor; the prepared catalyst precursor is activated in a hydrogen atmosphere at normal pressure, the temperature is 150 ℃, for 4 h. The active component accounts for 3% of the total mass of the catalyst, and the auxiliary agent accounts for 10% of the total mass of the ...
Example Embodiment
[0027] Example 3
[0028] A method for preparing a catalyst for hydrogenation of phthalate plasticizers to produce cyclohexane dicarboxylate, the specific steps are as follows:
[0029] Weigh 1 g of sodium carbonate to prepare a 5% sodium carbonate solution, treat 10 g of silica with it, stir evenly at room temperature, overnight at 110°C, dry, and grind; weigh 0.030 g of RuCl 3 ·XH 2 O (about 37% Ru), 2.000 g of Ni(NO 3 ) 2 ·6H 2 O and 5.434 g of Cr(NO 3 ) 3 ·9H 2 Dissolve O in 20 g of distilled water. After it is completely dissolved, spray the treated carrier into the dipping solution, stir for 2 h, immerse for 7 h, overnight at 110 ℃, dry, grind, and wash 4 times to remove Cl - , 110 ℃ overnight, drying, grinding to obtain the catalyst precursor; the prepared catalyst precursor is activated in a hydrogen atmosphere at normal pressure, temperature 200 ℃, time 4h. The active component accounts for 0.1% of the total mass percentage of the catalyst, and the auxiliary agent accounts ...
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