Method for producing vinyl acetate
A technology of vinyl acetate and acetic acid, applied in the field of preparing vinyl acetate by gas phase reaction, can solve problems such as reduction, and achieve the effects of large stacking void ratio, high space-time yield, and pressure drop loss reduction
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[0026] Vector preparation:
[0027] Add extrusion aids and binders to the silica gel powder, mix well, and form the carrier precursor by extrusion. Dry the carrier at room temperature for 48 hours, then dry it at 100°C for 24 hours, and place it in a muffle furnace for 730 °C for 2 hours. After cooling, put it into an autoclave, add a solution made of acetic acid and ammonium acetate, take out the carrier at 165°C and 0.6MPa for 14 hours at constant temperature and pressure, wash it with distilled water until it is neutral, and then roast it at 300°C for 3 hours. After cooling, the desired carrier is obtained. The physical characteristics of the carriers prepared in each embodiment are shown in Table 1.
[0028] Catalyst preparation:
[0029] With Na containing the equivalent of 6.35 g palladium 2 PdCl 4 and HAuCl equivalent to 2.96 g of gold 4 Prepare 450ml of aqueous solution, take 1.1 liters of the carrier obtained above and soak it for a while, dry it slightly, put t...
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