A kind of preparation method of copper-based hydrogenation catalyst without reduction activation
A hydrogenation catalyst, copper-based technology, applied in the preparation of organic compounds, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the inconvenience of catalyst energy consumption and take a long time, etc. problem, achieve the effect of saving in-situ reduction and activation steps and improving catalyst performance
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Embodiment 1
[0026] Weigh 48.32g Cu(NO 3 ) 2 ∙3H 2 O, 297.5g Zn(NO 3 ) 2 ∙6H 2 O and 300.1g Al(NO 3 ) 3 ∙9H 2 O is dissolved in water to form a solution with a total salt concentration of 1mol / L, and the mixed nitrate solution and 1mol / L Na 2 CO 3 After the solution was preheated to 60°C, it was poured into 60°C deionized water to maintain the pH of the solution at 7~8; after aging for 30 minutes, the precipitate was washed with deionized water and filtered to obtain a filter cake; weigh 19.3 g citric acid, and uniformly dispersed in 3L ethanol together with the filter cake, after stirring at room temperature for 30min, the temperature rose to 60°C to recover the ethanol by distillation, and the obtained solid A was roasted at 500°C for 4h under a nitrogen atmosphere, and then the temperature was lowered to At 40°C, switch the nitrogen gas to oxygen / nitrogen with an oxygen volume percentage of 1% and maintain it for 30 minutes, then cool down to room temperature, shape and crush t...
Embodiment 2
[0032] Weigh 120.8g Cu(NO 3 ) 2 ∙3H 2 O, 178.5g Zn(NO 3 ) 2 ∙6H 2 O, 337.6g Al(NO 3 ) 3 ∙9H 2 O and 52.2g Ba(NO 3 ) 2 Dissolve in water to form a solution with a total salt concentration of 1mol / L, mix the nitrate solution and 1mol / L K 2 CO 3After the solution was preheated to 60°C, it was poured into 60°C deionized water to maintain the pH of the solution at 7~8; after aging for 30 minutes, the precipitate was washed with deionized water and filtered to obtain a filter cake; weigh 75.05 g of tartaric acid, and evenly dispersed in 3L of acetone together with the filter cake, stirred at room temperature for 30min, then the temperature was raised to 60°C to recover ethanol by distillation, and the obtained solid A was roasted at 600°C for 2h in a nitrogen atmosphere, and then the temperature was lowered to 30°C ℃, switch the nitrogen gas to oxygen / nitrogen with an oxygen volume percentage of 1% and maintain it for 30 minutes, then cool down to room temperature, shape ...
Embodiment 3
[0038] Weigh 241.6g Cu(NO 3 ) 2 ∙3H 2 O, 267.7g Zn(NO 3 ) 2 ∙6H 2 O, 37.5g Al(NO 3 ) 3 ∙9H 2 O and 43.4gCe(NO 3 ) 3 ∙6H 2 O is dissolved in water to form a solution with a total salt concentration of 1mol / L, and the mixed nitrate solution and 1mol / L Na 2 CO 3 After the solution was preheated to 60°C, it was poured into 60°C deionized water to maintain the pH of the solution at 7~8; after aging for 30 minutes, the precipitate was washed with deionized water and filtered to obtain a filter cake; weigh 120.1 g tartaric acid, and evenly dispersed in 3L ether together with the filter cake, after stirring at room temperature for 30min, the temperature was raised to 60°C to recover ethanol by distillation, and the obtained solid formazan was roasted at 600°C for 2h under a nitrogen atmosphere, and then the temperature was lowered to 25°C °C, switch nitrogen to oxygen / nitrogen with 1% oxygen by volume and keep it for 30 minutes. The obtained solid B is shaped and crushed i...
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