Method for synthesizing dialkoxy propane
A technology of dialkoxypropane and acetone, which is applied in the field of synthesis of dialkoxypropane, can solve the problems of unfavorable industrial production, large solvent consumption, high production cost, etc., and achieve industrial production, non-corrosion equipment, and selectivity Good results
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example 1
[0016] Continuous Synthesis of Dimethoxypropane
[0017] The mixed solution of methanol and acetone (molar ratio 1: 2) is pumped down from the top, and passed through a 480 ml tubular reactor (diameter 48 mm, length 300 mm), which contains 150 grams of auxiliary agent , the additive is mixed with cationic resin and molecular sieve, the reaction temperature is controlled at 10°C, and the reaction time is 6 hours. After the reaction is finished, the reaction mixture is rectified to obtain the product dimethoxypropane with a yield of 80.1%, a selectivity of 99.5%, and a content of 99.3%.
example 2
[0019] Batch Synthesis of Dimethoxypropane
[0020] In all examples (a-e) in the following table 1, add methanol and acetone in a 500 ml reaction kettle with a thermometer and agitator, then add the auxiliary agent mixed by cationic resin and molecular sieve, start stirring, and control the temperature for 10 °C, react for 6 hours. After the reaction, the reaction mixture was rectified to obtain the product dimethoxypropane with a yield of 78.1% and a content of 99.2%.
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example 3
[0023] Continuous Synthesis of Diethoxypropane
[0024] The mixture of ethanol and acetone (molar ratio 1: 2) is pumped down from the top and passed through a 480 ml tubular reactor (diameter 48 mm, length 300 mm), which contains 150 grams of auxiliary agent , the additive is mixed with heteropolyacid and molecular sieve, the reaction temperature is controlled at 10°C, and the reaction time is 6 hours. After the reaction, the reaction mixture was rectified to obtain the product diethoxypropane with a yield of 82.1%, a selectivity of 99.5%, and a content of 99.1%.
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