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Catalyst for preparation of 3-acetoxy propionaldehyde

A technology of acetoxypropionaldehyde and catalyst, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, carbon monoxide or formate reaction preparation, etc., which can solve the problem of low selectivity and yield High, high selectivity of 3-acetoxypropanal, 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-acetoxypropionaldehyde, and a catalyst used for the preparation of 3-acetoxypropionaldehyde is provided, which has 3-acetoxypropionaldehyde High yield of propionaldehyde and high selectivity to 3-acetoxypropionaldehyde

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Preparation of the catalyst: Co containing 8.60gCo, 1.80gSr and 3.00gSn 2 (CO) 8 , Sr(OA C ) 2 0.5H 2 O and triphenyltin chloride (C 18 h 15 ClSn) fully mixed and dissolved in the concentration of 10wt% acetic acid aqueous solution to obtain immersion liquid 400ml, 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 Co content of the catalyst was determined by ICP to be 8.60 g / L, the Sr content to be 1.80 g / L, and the Sn content to be 3.00 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 11.8MPa, increase th...

Embodiment 2

[0034] The preparation of catalyst: the Co containing 8.60gCo, containing 1.80gSr and containing 3.00gZn 2 (CO) 8 , Sr(OA C ) 2 0.5H 2 O and zinc citrate (Zn 3 (C 6 h 5 o 7 ) 2 2H2 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 8.60 g / L, the Sr content to be 1.80 g / L, and the Zn content to be 3.00 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 an...

Embodiment 3

[0046] Preparation of catalyst: Co(OAc) containing 7.00gCo, 0.50gBe and 1.00gSn 2 4H 2 O, BeCl 2 and SnCl 2 2H 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 was determined by ICP to be 7.00 g / L, the Be content to be 0.50 g / L, and the Sn content to be 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 11.8MPa, increase the stirring sp...

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Abstract

The invention relates to catalyst for preparation 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 catalyst adopts SiO2, Al2O3 or a mixture thereof as the carrier, the active component includes at least one of iron series elements, an alkaline earth metal element and at least one metal element selected from IVA and IIB, thus welling solving the problems. The catalyst provided by the invention can be used for the industrial production of 1.3-propanediol.

Description

technical field [0001] The invention relates to a catalyst used in the preparation 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 synth...

Claims

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Application Information

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IPC IPC(8): B01J23/835B01J23/80B01J23/89B01J31/28B01J31/26C07C69/14C07C67/38
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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