A kind of preparation method of acetate compound and adopted catalyst
An esterification catalyst and compound technology, applied in the preparation of organic compounds, organic compounds/hydrides/coordination complex catalysts, preparation of carboxylic acid esters, etc. Production costs and other issues, to achieve high acid and alkali resistance, solve environmental pollution, reduce comprehensive costs
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Embodiment 1
[0069] At 45 °C, 20 g of MCM-248 molecular sieve and 200 g of polyvinylpyrrolidone (PVP) (CAS: 9003-39-8, K30) were dispersed in 200 mL of deionized water, and the stirring was started to make it evenly dispersed. After 8 hours, filter The solid was taken out, and placed in a vacuum drying oven at 80° C. and dried to obtain a modified carrier, which was recorded as MCM-248-PVP. At 25 °C, 4.83 g of FeCl 3 ·6H 2 O was dissolved in 10 mL of deionized water, then the modified carrier MCM-248-PVP was added, and stirring was started. The temperature was raised to 45°C, kept for 6 hours, filtered, and the obtained solid was dried in a vacuum drying oven at 80°C to obtain a catalyst of 5.0wt.% FeCl 3 / MCM-248-PVP.
[0070] Loading amount = (metal relative atomic mass / metal salt relative molecular weight * metal salt mass) / carrier mass * 100%
Embodiment 2~54
[0072] By changing the types and proportions of surfactants, carriers and metal salts, following the method of Example 1, the following catalysts were obtained respectively (as shown in Table 1).
[0073] Table 1 Catalyst and preparation parameters
[0074]
[0075]
[0076]
[0077]
[0078] acac stands for acetylacetone; OAc stands for acetate.
Embodiment 55
[0080] At 20 °C, 20 g of MCM-248 molecular sieve and 200 g of polyvinylpyrrolidone (PVP) (CAS: 9003-39-8, K30) were dispersed in 200 mL of deionized water. The solid was taken out, and placed in a vacuum drying oven at 80° C. and dried to obtain a modified carrier, which was recorded as MCM-248-PVP. At 25 °C, 4.83 g of FeCl 3 ·6H 2 O was dissolved in 10 mL of deionized water, then the modified carrier MCM-248-PVP was added, and stirring was started. The temperature was raised to 45°C, kept for 6 hours, filtered, and the obtained solid was dried in a vacuum drying oven at 80°C to obtain a catalyst of 5.0wt.% FeCl 3 / MCM-248-PVP 1 .
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