Supported ethylidene diacetate catalyst
A technology of diethylene acetate and catalysts, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve the problem of low yield and selectivity of diethylene acetate No high problems, to achieve the effect of improving yield and selectivity, improving activity and stability
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Embodiment 1
[0024] The preparation of catalyst: the Co(OAc) that contains 6.50gCo, contains 2.90gLa and contains 1.35gLi 2 4H 2 O, La(OAc) 3 6H 2 O and LiOAc were fully mixed and dissolved in pure water to obtain 500ml of impregnation solution, and 1.0L of spherical SiO with a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, and dried at 100°C for 3 hours. 2 The catalyst was obtained by raising the temperature to 500° C. and calcining for 5 h in the atmosphere.
[0025] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue t...
Embodiment 2
[0048] Preparation of the catalyst: Co(NO 3 ) 2 6H 2 O, La(NO 3 ) 3 6H 2 O and NaCl are fully mixed and dissolved in pure water to obtain 500ml of immersion solution, and 1.0L of spherical Al with a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 3 hours, dried at 80° C., and then heated to 400° C. and calcined for 5 hours in a He atmosphere to obtain the catalyst.
[0049] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue the reaction for 8.5h, stop the reaction.
[0050] Product an...
Embodiment 3
[0053] CoCl containing 6.50gCo, 2.90gLa and 1.35gK 2 6H 2 O, LaCl 3 7H 2 O and KNO 3 Fully mix and dissolve in pure water to obtain 500ml of impregnation solution, and 1.0L of spherical Al with a diameter of 5.6mm 2 o 3 The carrier was immersed in the impregnating solution, left to stand for 3 hours, dried at 120° C., and then heated to 600° C. and calcined for 5 hours in an Ar atmosphere to obtain the catalyst.
[0054] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue the reaction for 8.5h, stop the reaction.
[0055] Product analysis: ...
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