Synthesis process of 2-acetylfuran
A technology for the synthesis of acetylfuran, applied in organic chemistry, etc., can solve the problems of low selectivity of 2-acetylfuran, corrosion environment of equipment, large amount of catalyst, etc., and achieve green and environmental protection in the production process, reduce production cost, and fast reaction rate Effect
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[0027] Modification of the catalyst: the starting material is SiO 2 / Al 2 o 3 NH with a molar ratio of 50 4 -ZSM-5 type zeolite molecular sieve powder. Add 85g NH successively to the four-neck flask 4 - ZSM-5 zeolite and 400g deionized water, stirred and mixed into a slurry. Heat up to 95°C, add 10g of phosphoric acid aqueous solution (85wt%, water as solvent) dropwise, then continue to keep warm for 3 hours, evaporate 200g of water, then cool to 25°C, and suction filter to obtain wet zeolite 1. Then vacuum dry at 95-120°C for 2 hours, dry at 320-360°C for 3 hours, and then calcinate in air at 510-530°C for 5 hours; then crush the calcined zeolite, pass through 50 mesh and 60 mesh Sieving with a sieve to finally obtain phosphoric acid-modified zeolite molecular sieve catalyst 1.
[0028] Synthesis of 2-acetylfuran: add 96g of furan and 96g of acetic acid into a three-necked flask in turn, start stirring and add 48g of modified zeolite molecular sieves as a catalyst, then...
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