Method for the synthesis of 1,3‑propanediol
A technology selected from propylene glycol, which is applied in the field of 1,3-propanediol synthesis, can solve the problems of low yield and selectivity of propylene glycol, and achieve the effect of improving activity and stability
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Embodiment 1
[0030] Preparation of hydroformylation catalyst: Co containing 8.50gCo, containing 2.10gLi and containing 2.80gBi 2 (CO) 8 , LiCl and bismuth subsalicylate (C 7 h 5 BiO 4 ) fully mixed and dissolved in an aqueous acetic acid solution with a concentration of 10wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 168m 2 / g, spherical SiO with a pore volume of 0.94 and a diameter of 5.6 mm 2 The carrier was immersed in the above impregnating solution, left to stand for 3 hours and dried at 100° C. to obtain the catalyst. The Co content of the catalyst measured by ICP is 8.50 g / L, the Li content is 2.10 g / L, and the Bi content is 2.80 g / L.
[0031] Synthesis of 1,3-propanediol:
[0032] Step (1): Add 2.50 mol of toluene, 0.02 mol of hydroformylation main catalyst, 0.20 mol of triphenylphosphine and 1.65 mol of vinyl acetate into a 1L titanium reactor. 2.0MPa, then feed carbon monoxide and hydrogen until the pressure is 12.4MPa, increase the stir...
Embodiment 2
[0038] The preparation of hydroformylation catalyst: the Co containing 8.50gCo, containing 2.10gLi and containing 2.80gAu 2 (CO) 8 , LiCl and ammonium tetrachloroaurate (NH 4 AuCl 4 2H 2 O) fully mixed and dissolved in the acetic acid aqueous solution with a concentration of 10wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 168m 2 / g, spherical SiO with a pore volume of 0.94 and a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, left to stand for 3 hours and dried at 100° C. to obtain the catalyst. The Co content of the catalyst was determined by ICP to be 8.50 g / L, the Li content was 2.10 g / L, and the Au content was 2.80 g / L.
[0039] Synthesis of 1,3-propanediol:
[0040] Step (1): Add 2.50 mol of toluene, 0.02 mol of hydroformylation main catalyst, 0.20 mol of triphenylphosphine and 1.65 mol of vinyl acetate into a 1L titanium reactor. 2.0MPa, then feed carbon monoxide and hydrogen until the pressure...
Embodiment 3
[0056] The preparation of hydroformylation catalyst: the Co(OAc) that contains 7.00gCo, contains 0.50gNa and contains 1.00gBi 2 4H 2 O, Na 2 O and (BiO) 2 CO 3 0.5H 2 O is fully mixed and dissolved in an aqueous hydrochloric acid solution with a concentration of 8wt% to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 200m 2 / g, spherical Al with a pore volume of 1.00 and a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 3 hours and dried at 80° C. to obtain the catalyst. The Co content of the catalyst measured by ICP was 7.00 g / L, the Na content was 0.50 g / L, and the Bi content was 1.00 g / L.
[0057] Synthesis of 1,3-propanediol:
[0058] Step (1): Add 2.50 mol of toluene, 0.02 mol of hydroformylation main catalyst, 0.20 mol of triphenylphosphine and 1.65 mol of vinyl acetate into a 1L titanium reactor. 2.0MPa, then feed carbon monoxide and hydrogen until the pressure is 12.4MPa, increas...
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