N,N-dimethyl-4-cyclohexylaminomethylcyclohexane as well as preparation method and application thereof
A technology of cyclohexylaminobenzylmethane and cyclohexylmethane, which is applied in the field of by-product deamination mixture, can solve the problems of high cost, low catalytic efficiency of amine catalyst, etc., and achieves reduced production cost, low toxicity and low amine odor. Effect
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[0042] Example 1
[0043] Preparation of palladium catalyst 1:
[0044] Dissolve 12.52g of palladium nitrate dihydrate, 2.81g of rhodium nitrate, and 1.38g of ruthenium acetate in 100ml of deionized water, heat to 80℃ to form a homogeneous solution, and then add 93.5g of activated carbon (average particle size 20μm, specific surface area 220m 2 / g, pore volume 0.35cc / g), rotate and immerse in a water bath at 80°C for 4h, and then gradually evaporate the water, then bake in an oven at 120°C for 12 hours; finally move to a muffle furnace, in an air atmosphere at 2°C / The temperature is raised to 500°C for 6 hours, and the catalyst can be obtained after natural cooling. The composition of the catalyst is: Pd is 5 wt%, Rh is 1 wt%, Ru is 0.5 wt%, and the rest is activated carbon, based on the corresponding metal elements in the total mass of the catalyst.
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[0045] Example 2
[0046] Preparation of palladium catalyst 2:
[0047] Dissolve 25.04g of palladium nitrate dihydrate, 0.14g of rhodium nitrate, and 2.76g of ruthenium acetate in 100ml of deionized water, heat to 60℃ to form a homogeneous solution, and then add 88.95g of alumina (average particle size 50μm, specific surface area 180m 2 / g, pore volume 0.30cc / g), rotate and immerse in a water bath at 70°C for 5h, then gradually evaporate the water, and bake it in an oven at 100°C for 16 hours; finally move to a muffle furnace at 3°C / g in an air atmosphere The temperature is increased to 550°C for 8 hours, and the catalyst can be obtained after natural cooling. The composition of the catalyst is: Pd is 10 wt%, Rh is 0.05 wt%, Ru is 1 wt%, and the rest is alumina, based on the corresponding metal elements in the total mass of the catalyst.
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[0048] Example 3
[0049] Preparation of palladium catalyst 3:
[0050] Dissolve 5.01g of palladium nitrate dihydrate, 1.40g of rhodium nitrate, and 5.51g of ruthenium acetate in 100ml of deionized water, heat to 70°C to form a homogeneous solution, and then add 95.5g of silica (average particle size 60μm, specific surface area 240m 2 / g, pore volume 0.38cc / g), rotate and immerse in a 60℃ water bath for 6 hours, and then gradually evaporate the water, then bake it in an oven at 120℃ for 12 hours; finally move to a muffle furnace, in an air atmosphere at 2℃ / The temperature is raised to 600°C for 6 hours, and the catalyst can be obtained after natural cooling. The composition of the catalyst is: Pd is 2wt%, Rh is 0.5wt%, Ru is 2wt%, and the rest is silica, based on the corresponding metal elements in the total mass of the catalyst.
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