Catalyst for producing ethylene carbonate and ethylene glycol, method for producing same, and method and device for producing ethylene glycol using same
A technology of ethylene carbonate and its manufacturing method, which is applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., and can solve problems such as high prices
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manufacture Embodiment 1
[0069] In a three-necked flask equipped with a thermometer, a reflux condenser and a dropping device, add 5 g of biguanide, 2.2 g of potassium iodide and 5.2 g of 50% glutaraldehyde, and stir for 1 hour at a reaction temperature of 75° C. and a pH of 3. 5.2 g of 50% glutaraldehyde was further added by means of a dropping device, adjusted to pH 4.0 with a 20% hydrochloric acid solution, and reacted for 12 hours.
[0070] Into a 100 mL two-necked flask equipped with a reflux device, 1.5 g of the catalyst precursor material synthesized by the above method, 50 g of distilled water, and 0.5 g of polyacrylic acid were filled, and the mixture was stirred at 60° C. for 2 hours to react.
[0071] After the reaction, water was removed using a Rotary Evaporator (Rotary Evaporator) under reduced pressure, thereby synthesizing a novel catalyst powder containing a carbonyl group ([Chemical Formula 1]).
manufacture Embodiment 2
[0073] In a three-necked flask equipped with a thermometer, a reflux condenser and a dropping device, add urea 3.6g, ammonium iodide 2.2g, glyoxal (glyoxal) 3.8g, diethylenetriamine 0.05g, at a reaction temperature of 75 °C, pH 3 and stirred for 1 hour. 3.8 g of glyoxal was further added by means of a dropwise addition device, adjusted to pH 4.0 with a 20% hydrochloric acid solution, and reacted for 12 hours.
[0074] In a 100 mL two-necked flask equipped with a reflux device, 1.5 g of the catalyst precursor material synthesized by the above method, 50 g of distilled water, and 0.5 g of graphene oxide were filled, and stirred at 60° C. for 2 hours to react.
[0075] After the reaction, water was removed using a Rotary Evaporator (Rotary Evaporator) under reduced pressure, thereby synthesizing a novel catalyst powder containing a carbonyl group ([Chemical Formula 2]).
manufacture Embodiment 3
[0077] In a three-necked flask equipped with a thermometer, a reflux condenser, and a dropping device, add 2.8 g of dicyandiamide, 1.9 g of ammonium bromide, 4.5 g of succindaldehyde (succindaldehyde), and 0.05 g of diethylenetriamine. Stir at 75°C, pH 3 for 1 hour. Further, 4.5 g of succinic dialdehyde was added through a dropping device, adjusted to pH 4.0 with 20% hydrochloric acid solution, and reacted for 12 hours.
[0078] A 100 mL two-necked flask equipped with a reflux device was filled with 1.5 g of the catalyst precursor material synthesized by the above-mentioned method, 50 g of distilled water, and 0.5 g of propionic acid, and reacted for 2 hours with stirring at 60° C.
[0079] After the reaction, water was removed using a Rotary Evaporator under reduced pressure, thereby synthesizing a novel catalyst powder containing a carbonyl group ([Chemical Formula 3]).
[0080] [Example of ethylene glycol production]
[0081] (1) Manufacture of carbonation reaction (mixtu...
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