A kind of method for tricyclodecane dimethanol hydrogenation synthesis tricyclodecane dimethanol
A technology for catalyzing tricyclodecanedicarbaldehyde and decanedimethanol, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve the problems of large amount of catalyst and high reaction temperature, and achieve short reaction time. , the preparation process is simple, the effect of easy separation
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Embodiment 1
[0018] Preparation of copper catalyst supported on alumina:
[0019] a. Dissolve 10g of aluminum nitrate in 50ml of distilled water, raise the temperature to 60°C, and then add 5g of citric acid under vigorous stirring. After adding citric acid, age at 60°C for 24 hours, and then roast at 300°C 6 hours, obtain aluminum oxide;
[0020] b. Dissolve 10g of copper nitrate in 30ml of distilled water; add the alumina obtained in step a, let stand at room temperature for 3 hours, bake at 100°C for 3 hours, and then roast at 300°C for 6 hours to obtain alumina-supported Copper oxide;
[0021] c. The alumina-supported copper oxide obtained in step b was first reduced in a hydrogen atmosphere at 200°C for 6 hours, cooled to room temperature, calcined in an air atmosphere at a temperature of 100°C for 6 hours, cooled to room temperature, and then in a hydrogen atmosphere Reduction at 200°C for 6 hours, cooled to room temperature, calcined at 100°C for 6 hours in an air atmosphere, cool...
Embodiment 2
[0025] Preparation of silica-supported copper catalyst:
[0026] a. Dissolve 10g of tetraethyl orthosilicate in 50ml of distilled water, heat up to 80°C, and then add 5g of citric acid under vigorous stirring. After adding citric acid, age at 80°C for 72 hours, and then Calcined at ℃ for 3 hours to obtain silicon dioxide;
[0027] b. Dissolve 10g of copper chloride in 30ml of distilled water, add the silicon dioxide obtained in step a, let stand at room temperature for 5 hours, bake at 100°C for 5 hours, and then roast at 600°C for 3 hours to obtain silicon dioxide Supported copper oxide;
[0028] c. Reduct the silicon dioxide-supported copper oxide obtained in step b at 600°C for 4 hours in a hydrogen atmosphere, cool to room temperature, bake at 500°C in an air atmosphere for 3 hours, and cool to room temperature; then Reduction at a medium temperature of 600°C for 4 hours, cooled to room temperature, calcined at a temperature of 500°C in an air atmosphere for 3 hours, coo...
Embodiment 3
[0032] Preparation of silica-supported copper catalyst:
[0033] a. Dissolve 10g of tetraethyl orthosilicate in 50ml of distilled water, heat up to 80°C, and then add 5g of citric acid under vigorous stirring. After adding citric acid, age at 80°C for 72 hours, and then Calcined at ℃ for 3 hours to obtain silicon dioxide;
[0034] b. Dissolve 10g of copper sulfate in 30ml of distilled water, add the silicon dioxide obtained in step a, let stand at room temperature for 5 hours, bake at 100°C for 5 hours, and then roast at 600°C for 3 hours to obtain silicon dioxide. supported copper oxide;
[0035] c. The silica-supported copper oxide obtained in step b is first reduced in a hydrogen atmosphere at a temperature of 600°C for 4 hours, cooled to room temperature, baked in an air atmosphere at a temperature of 500°C for 3 hours, cooled to room temperature, and then heated in a hydrogen atmosphere. Reduction at a medium temperature of 600°C for 4 hours, cooled to room temperature,...
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