Catalyst for catalytically synthesizing N-methyl ethanol amine compound and application thereof
A methylethanolamine, catalyst technology, applied in the direction of organic compound/hydride/coordination complex catalyst, organic compound preparation, aminohydroxy compound preparation, etc., can solve the problem of low yield and selectivity, difficult continuous reaction, impurity There are many kinds of problems, so as to achieve the effect of good selectivity, simple preparation and low unit consumption of raw materials
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Embodiment 1
[0030] Preparation of PPh 3 -Cs-Al 2 o 3 catalyst
[0031] Weigh 23.5g mesoporous γ-Al 2 o 3 The particles were impregnated in 500ml, 0.5mol / L CsNO 3 In aqueous solution, the CsNO 3 The aqueous solution is just submerged in γ-Al 2 o 3 Particles and soaked at 20 ℃ for 40h, so that the solution is fully mixed. Put all the impregnation liquid and the impregnation into an oven for drying, the temperature of the oven is 80° C., and the drying time is 8 hours to obtain a solid mixture. Under an air atmosphere, put the obtained solid mixture into a high-temperature furnace for calcination. The calcination temperature is 400°C, the calcination time is 10 hours, and the calcination heating rate is 8°C / min. After cooling, take out to obtain Cs-Al 2 o 3 Uniform particles. The uniform particles were completely submerged in 120mL, 0.8mol / L PPh 3impregnated in ethanol solution, the immersion temperature is 20°C, and the immersion time is 40h, and the impregnation mixture is put ...
Embodiment 2
[0036] Preparation of PPh 3 -Cs-Al 2 o 3 catalyst
[0037] Weigh 122g of mesoporous γ-Al 2 o 3 The particles were impregnated in 800mL, 2.2mol / L CsNO 3 In aqueous solution, the CsNO 3 The aqueous solution is just submerged in γ-Al 2 o 3 Particles and soaked at 80 ℃ for 40h, so that the solution is fully mixed. Put all the impregnating liquid and the impregnating matter into an oven for drying, the temperature of the oven is 150° C., and the drying time is 3 hours to obtain a solid mixture. Under the air atmosphere, put the obtained solid mixture into a high-temperature furnace for calcination, the calcination temperature is 600°C, the calcination time is 10 hours, the calcination heating rate is 10°C / min, and the uniform particle Cs-Al is obtained by cooling and taking out 2 o 3 . The uniform particles were completely submerged in 130mL, 2.0mol / L PPh 3 Immersed in ethanol solution, the immersion temperature is 80°C, the immersion time is 40h, take it out and put it...
Embodiment 3
[0041] Preparation of PPh 3 -Cs-Al 2 o 3 catalyst
[0042] Weigh 28.9g mesoporous γ-Al 2 o 3 The particles were impregnated in 1000ml, 0.5mol / LCsNO 3 In aqueous solution, the CsNO 3 The aqueous solution is just submerged in γ-Al 2 o 3 Particles were soaked at 70°C for 6 hours to make the solution fully mixed. Put all the impregnation liquid and the impregnation into an oven for drying, the temperature of the oven is 140° C., and the drying time is 3.5 hours to obtain a solid mixture. Under the air atmosphere, put the obtained solid mixture into a high-temperature furnace for calcination, the calcination temperature is 500°C, the calcination time is 5 hours, the calcination heating rate is 10°C / min, and the Cs-Al is obtained by cooling. 2 o 3 Uniform particles. The uniform particles were completely submerged in 120mL, 0.8mol / L PPh 3 immersion in ethanol solution, the immersion temperature is 20°C, the immersion time is 40h, take it out and put it into a drying oven ...
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