A kind of preparation method of 2,5-furandimethanol
A technology of furandimethanol and heteroatoms, which is applied in the field of preparation of 2,5-furandimethanol, can solve the problems of long-term storage tending to polymerization or oxidation, active and unstable properties, high market price, etc., and achieves good application prospects , low price, simple preparation method
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Embodiment 1
[0066] Take 40g of ionic liquid 1-butyl-3-methylimidazolium bromide [BMIM]Br into a three-necked flask, heat and stir at 400rmp / min in an oil bath at 80°C, and oxidize 7.056g of phosphoric acid and 6.8g of tetraethyl hydroxide Ammonium, 4.902g of aluminum isopropoxide, 0.453g of copper acetate, and 0.4g of hydrofluoric acid were added at intervals of half an hour. After stirring, the solution was poured into a crucible and moved to a muffle furnace at 180°C for crystallization for 5 hours. After the reaction, the obtained product was poured into deionized water, washed, filtered, and dried at 100° C. for 10 h. Afterwards, the product was roasted in a muffle furnace, roasted at 600° C. for 2 h, and taken out after cooling to obtain a copper-doped aluminum phosphate molecular sieve, which was designated as 1# (the aluminum phosphate molecular sieve prepared in this example is AlPO4-5 molecular sieve, the mass content of copper in 1# is 0.66wt.%), carries out XRD characterization...
Embodiment 2
[0068] Take 40g of ionic liquid 1-butyl-3-methylimidazolium bromide [BMIM]Br into a three-necked flask, heat and stir at 400rmp / min in an oil bath at 80°C, and oxidize 7.056g of phosphoric acid and 6.8g of tetraethyl hydroxide Ammonium, 4.902g of aluminum isopropoxide, 0.54g of nickel acetate, and 0.4g of hydrofluoric acid were added at intervals of half an hour. After stirring, the solution was poured into a crucible and moved to a muffle furnace at 280°C for 15 minutes. After the reaction, the obtained product was poured into deionized water, washed, filtered, and dried at 100° C. for 10 h. Afterwards, the product is placed in a muffle furnace for roasting, roasted at 400°C for 12h, and taken out after cooling to obtain a nickel-doped aluminum phosphate molecular sieve, which is recorded as 2# (the mass content of nickel in 2# is 0.4wt .%), carry out XRD characterization to sample 2#, the result shows as figure 2 shown.
Embodiment 3
[0070] Take 40g of ionic liquid 1-butyl-3-methylimidazolium bromide [BMIM]Br into a three-necked flask, heat and stir at 400rmp / min in an oil bath at 80°C, and oxidize 7.056g of phosphoric acid and 6.8g of tetraethyl hydroxide Ammonium, 4.902g of aluminum isopropoxide, 0.58g of ferric nitrate, and 0.4g of hydrofluoric acid were added at intervals of half an hour. After stirring, the solution was poured into a crucible and moved to a muffle furnace at 220°C for 2 hours. After the reaction, the obtained product was poured into deionized water, washed, filtered, and dried at 100° C. for 10 h. Afterwards, place the product in a muffle furnace for roasting, roast at 500°C for 8h, and take it out after cooling to obtain an iron-doped aluminum phosphate molecular sieve, which is recorded as 3# (the mass content of iron in 3# is 0.51wt .%), carry out XRD characterization to sample 3#, the result shows as image 3 shown.
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