A method for catalytically preparing Wood Hyacinth. Mix phenylethyl alcohol, acetal and deionized water in a molar ratio of 1:8:15 to obtain a mixed solution. After stirring at room temperature for 10 minutes, add 10% of the weight of the mixed solution For the magnetic ionic liquid, continue stirring for 20 minutes, then let it stand for 30 minutes; the magnetic ionic liquid in the lower layer is directly recycled after being separated by a magnetic field; the mixed solution containing hyacinth in the upper layer is further separated and purified to obtain Wood Hyacinth products and unreacted raw materials; After analysis, the conversion rate of phenylethyl alcohol was 99.5%, and the yield rate of hyacinth was 98.6%. Wherein, the magnetic ionic liquid is prepared through the following steps:
1) Preparation of magnetic core CuFe2O4: Dissolve FeCl3·6H2O and Cu(Ac)2·H2O in ethylene glycol solution, then add sodium acetate and CTAB to it for 30 minutes of ultrasonic treatment to obtain the mixture, and then in a water bath at 180 °C React 36h to obtain a suspension, after the suspension is naturally cooled to room temperature, centrifuge, wash, and dry to obtain CuFe2O4 magnetic nanocrystals; wherein, FeCl3 6H2O, Cu(Ac)2 H2O, sodium acetate and CTAB The amount ratio is 6:3:40:12, and the concentration of sodium acetate in the mixture is 0.5mol/L;
2) TiO2 coating on the surface of CuFe2O4: Disperse the CuFe2O4 magnetic nanocrystals obtained in step 1) in the dispersed phase mixed with ethylene glycol and deionized water, then add ammonia water and sonicate for 40min at a power of 100W, and then After adding tetrabutyl titanate dropwise under the condition of vigorous stirring, stirring at room temperature for 2 hours, centrifugation was carried out, and the solid product after centrifugation was dried at 110°C for 10 hours to obtain CuFe2O4@TiO2 carrier; among them, ethylene glycol, The volume ratio of deionized water, ammonia water, and tetrabutyl titanate is 100:25:5:1, and the mass volume ratio of CuFe2O4 magnetic nanocrystals to ethylene glycol is 5g/L;
3) Preparation of magnetic ionic liquid: put CuFe2O4@TiO2 carrier in aqueous solution, then add ionic liquid M to disperse under 200w ultrasonic conditions for 2h, and then place it in a vacuum oven at 55°C for 15h to obtain magnetic ionic liquid; The mass ratio of liquid M to CuFe2O4@TiO2 carrier was 25wt%, and the mass-volume ratio of CuFe2O4@TiO2 carrier to water was 1/20g/mL; the magnetic ionic liquid was obtained by treating in a vacuum oven at 60°C for 12h.