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Catalyst for synthesis of 3-acetoxy propionaldehyde

An acetoxy propionaldehyde, catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of selectivity Low, high yield, high selectivity of 3-acetoxypropionaldehyde, to achieve the effect of improving activity and stability, improving yield and selectivity

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the problem of low yield and low selectivity of 3-acetoxy propionaldehyde, and a catalyst used for the synthesis of 3-acetoxy propionaldehyde is provided, which has 3-acetoxy propionaldehyde High yield of propionaldehyde and high selectivity to 3-acetoxypropionaldehyde

Method used

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  • Catalyst for synthesis of 3-acetoxy propionaldehyde
  • Catalyst for synthesis of 3-acetoxy propionaldehyde
  • Catalyst for synthesis of 3-acetoxy propionaldehyde

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The preparation of catalyst: will contain 8.50gCo, contain 2.10gLi and contain the Co 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.

[0030] Synthesis of 3-acetoxypropionaldehyde: Add 2.50mol toluene, 0.15mol catalyst, 0.20mol triphenylphosphine and 1.65mol vinyl acetate into a 1L titanium reactor, first use argon to discharge the air in the reactor and then pressurize to 2.0MPa, then feed carbon monoxide and hydrogen until the pressure is 12.4MPa, increase t...

Embodiment 2

[0034] Preparation of the catalyst: the Co containing 8.50gCo, 2.10gLi and 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 5.6 mm 2The 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.

[0035] Synthesis of 3-acetoxypropionaldehyde: Add 2.50mol toluene, 0.15mol catalyst, 0.20mol triphenylphosphine and 1.65mol vinyl acetate into a 1L titanium reactor, first use argon to discharge the air in the reactor and then pressurize to 2.0MPa, then feed carbon monoxide and hydrogen until the pressure is 12.4MPa, ...

Embodiment 3

[0046] Preparation of catalyst: Co(OAc) containing 7.00gCo, 0.50gNa and 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.

[0047] Synthesis of 3-acetoxypropionaldehyde: Add 2.50mol toluene, 0.15mol catalyst, 0.20mol triphenylphosphine and 1.65mol vinyl acetate into a 1L titanium reactor, first use argon to discharge the air in the reactor and then pressurize to 2.0MPa, then feed carbon monoxide and hydrogen until the pressure is 12.4MPa, increase the stirring speed...

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Abstract

The invention relates to a catalyst for synthesis of 3-acetoxy propionaldehyde, and mainly solves the problems of low activity and selectivity of 3-acetoxy propionaldehyde catalyst in the prior art. According to a technical scheme, the 3-acetoxy propionaldehyde catalyst adopts SiO2, Al2O3 or a mixture thereof as the carrier, the active component includes at least one of iron series elements, an alkali metal element and at least one metal element selected from VA and IB, thus welling solving the problems. The 3-acetoxy propionaldehyde catalyst can be used for the industrial production of 1.3-propanediol.

Description

technical field [0001] The invention relates to a catalyst used in the synthesis of 3-acetoxypropionaldehyde, a production method of the catalyst and a synthesis method of 3-acetoxypropionaldehyde. Background technique [0002] 1.3-Propanediol (1.3-PDO) is an important chemical raw material, mainly used in the synthesis of plasticizers, detergents, preservatives, emulsifiers, and also used in food, cosmetics and pharmaceutical industries. Because it is an important polyester fiber monomer, its main use is as a monomer and terephthalic acid to synthesize a new type of polyester material, polytrimethylene terephthalate (PTT). [0003] 1. The preparation methods of 3-propylene glycol include ethylene oxide one-step method, ethylene oxide two-step method, acrolein hydration method, acetaldehyde-formaldehyde condensation method, acrylate method, biological method, vinyl acetate hydroformylation, etc. At present, the industrialized production method of 1.3-PDO is chemical synthes...

Claims

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Application Information

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IPC IPC(8): B01J23/843B01J23/89B01J31/26C07C69/14C07C67/38
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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