Catalyst for producing ethylidene diacetate
A technology of ethylene diacetate and catalyst, applied in physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, organic chemistry and other directions, can solve the problem of low selectivity and yield of ethylene diacetate Low, high selectivity of ethylene diacetate, to achieve the effect of improving yield and selectivity, improving activity and stability
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Embodiment 1
[0029] Preparation of catalyst: RhCl containing 6.30gRh, 2.90gB and 3.00gZn 3 ·3H 2 O, ammonium pentaborate ((NH 4 )B 5 o 8 ·8H 2 O) and zinc gluconate (C 12 h 22 o 14 Zn 3 ·3H 2 O) fully mixed and dissolved in pure water to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 165m 2 / g, spherical SiO with a pore volume of 0.95 and a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 100° C. to obtain the catalyst. The Rh content of the catalyst was analyzed by ICP-MS to be 6.30 g / L, the B content was 2.90 g / L, and the Zn content was 3.00 g / L.
[0030] Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monoxide and hydrogen until the pressure is 7.8MPa, increase the stirring ...
Embodiment 2
[0034]Preparation of catalyst: RhCl containing 6.30gRh, 2.90gB and 3.00gCe 3 ·3H 2 O, ammonium pentaborate ((NH 4 )B 5 o 8 ·8H 2 O) and Ce(OAc) 3 ·5H 2 O is fully mixed and dissolved in pure water to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 165m 2 / g, spherical SiO with a pore volume of 0.95 and a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 100° C. to obtain the catalyst. The Rh content of the catalyst was analyzed by ICP-MS to be 6.30 g / L, the B content was 2.90 g / L, and the Ce content was 3.00 g / L.
[0035] Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monoxide and hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1200rpm, while stirr...
Embodiment 3
[0046] The preparation of catalyst: will contain 5.00gRh, contain 1.00gB and contain 1.00gZn triphenylphosphine rhodium chloride (C 54 h 45 ClP 3 Rh), boric acid (H 3 BO 3 ) and zinc citrate Zn 3 (C 6 h 5 o 7 ) 2 2H 2 O is fully mixed and dissolved in acetic acid with a concentration of 10wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 150m 2 / g, spherical Al with a pore volume of 0.90 and a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 80° C. to obtain the catalyst. The Rh content of the catalyst analyzed by ICP-MS was 5.00 g / L, the B content was 1.00 g / L, and the Zn content was 1.00 g / L.
[0047] Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monox...
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