Method for producing 1, 3-propanediol
A technology for propylene glycol and hydroformylation catalysts, which is applied in chemical instruments and methods, preparation of organic compounds, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problems of low yield and selectivity of propylene glycol
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Embodiment 1
[0027] Preparation of hydroformylation main catalyst: RhCl containing 6.50gRh, containing 2.40gLa and containing 3.10gSb 3 ·3H 2 O, La(OAc) 3 ·5H 2 O and Cl 3 Sb 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 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 Rh content of the catalyst was measured by ICP to be 6.50 g / L, the La content was 2.40 g / L, and the Sb content was 3.10 g / L.
[0028] Synthesis of 1,3-propanediol:
[0029]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. 1.0MPa, then feed carbon monoxide and hydrogen until the pressure is 5.3MPa, increase the...
Embodiment 2
[0035] Preparation of hydroformylation main catalyst: RhCl containing 6.50gRh, containing 2.40gLa and containing 3.10gNb 3 ·3H 2 O, La(OAc) 3 ·5H 2 O and NbCl 5 Fully mix and dissolve 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 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 Rh content of the catalyst was determined by ICP to be 6.50 g / L, the La content was 2.40 g / L, and the Nb content was 3.10 g / L.
[0036] Synthesis of 1,3-propanediol:
[0037] 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. 1.0MPa, then feed carbon monoxide and hydrogen until the pressure is 5.3MPa, increase the sti...
Embodiment 3
[0053] The preparation of hydroformylation main catalyst: the Rh(OAc) that contains 6.50gRh, contains 2.40gCe and contains 3.10gSb 3 、Ce(OAc) 3 ·6H 2 O and Sb 2 o 3 Fully mix and dissolve in an aqueous nitric acid solution with a concentration of 8wt%, to obtain 400ml of impregnation solution, and make 1.0L specific surface to 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 Rh content of the catalyst was determined by ICP to be 6.50 g / L, the Ce content was 2.40 g / L, and the Sb content was 3.10 g / L.
[0054] Synthesis of 1,3-propanediol:
[0055] 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. 1.0MPa, then feed carbon monoxide and hydrogen until the pressure is 5.3MPa, increase the stirr...
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