Method for synthesizing aminopropyltriethoxysilane by low temperature and low pressure method
A technology for synthesizing aminopropyltriethoxysilane and cyanoethyltriethoxysilane, which is applied in chemical instruments and methods, compounds of Group 4/14 elements of the periodic table, organic chemistry, etc., and can solve the problem of reaction temperature and Response pressure is high, pollutant discharge affects the environment and other problems, to achieve the effect of reducing reaction temperature and pressure, saving treatment cost, and saving catalyst usage
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specific Embodiment approach 1
[0031] Specific Embodiment 1: The production device for synthesizing aminopropyltriethoxysilane by low-temperature and low-pressure method in this embodiment, the device includes a tubular reactor 1, a first hydrogen cycle compressor 2, a second hydrogen cycle compressor 14, a hydrogen buffer Tank 3, raw material flow pump 4, liquid ammonia flow pump 5, SK static mixer 6, cooler 7, gas-liquid separator 8, liquid ammonia cooler 9, liquid ammonia storage tank 10, hydrogen storage tank 11, cyanoethyl Triethoxysilane storage tank 12 and product receiving storage tank 13 are characterized in that:
[0032] The upper end of the hydrogen storage tank 11 is connected to the side end of the first hydrogen cycle compressor 2, the upper end of the first hydrogen cycle compressor 2 is connected to the side end of the hydrogen buffer tank 3, the upper end of the hydrogen buffer tank 3, one end of the SK static mixer 6 and the tube The upper end of the tubular reactor 1 is connected, the lo...
specific Embodiment approach 2
[0033] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the method for synthesizing aminopropyltriethoxysilane by low temperature and low pressure method is as follows:
[0034] 1. Fill the magnetic solid-supported catalyst packing in the tubular reactor 1, and raise the temperature in the tubular reactor 1 to 90°C;
[0035] Two, open the first hydrogen cycle compressor 2, pass the hydrogen in the hydrogen storage tank 11 into the tubular reactor 1 through the hydrogen buffer tank 3, control the hydrogen pressure to 1.0MPa, and pass the cyanoethyl through the raw material flow pump 4 Triethoxysilane is poured into the tubular reactor 1 at a flow rate of 0.1t / h~0.25t / h, and at the same time, the liquid ammonia is pumped at a flow rate of 0.1t / h~0.25t / h through the liquid ammonia flow pump 5 In the tubular reactor 1, cyanoethyltriethoxysilane and liquid ammonia enter the tubular reactor 1 after being mixed uniformly in the SK st...
specific Embodiment approach 3
[0037] Specific embodiment three: the difference between this embodiment and specific embodiment two is that the method of magnetically immobilized catalyst is as follows:
[0038] 1. Put 65 parts by mass of metal nickel, 23 parts by mass of aluminum and 12 parts by mass of accelerator into a high-temperature melting furnace to obtain a uniformly mixed melt, quench the melt, and quench the quenched alloy to obtain a quenched alloy, which is then pulverized into a diameter of 0.1 ~ 0.5cm particles;
[0039] 2. Leach the aluminum in the alloy from the particles obtained in step 1 with a sodium hydroxide solution with a mass concentration of 25% at 50° C., and the entire leaching process lasts for 20 to 40 minutes;
[0040] 3. Wash the leached alloy treated in step 2 with ultra-pure water, while introducing hydrogen to activate the alloy, and then rinse with ethanol to obtain a modified catalyst;
[0041] 4. With NdFeB added with rare earth dysprosium as the strong magnetic cent...
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Abstract
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