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Catalyst for synthesizing vinyl acetate through acetylene method

A technology of vinyl acetate and catalyst, which is applied in the field of synthesis of vinyl acetate by acetylene vapor phase method, can solve the problem of low catalyst activity, achieve the effect of improving activity and stability, and increasing yield

Active Publication Date: 2017-02-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the low activity of the acetylene method vinyl acetate catalyst in the prior art, and a new catalyst for the synthesis of vinyl acetate by the acetylene method is provided, which has the characteristics of high activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation of catalyst: will contain 98g zinc acetate (Zn(OAc) 2 ), containing 6.30g potassium acetate (KOAc) and containing 2.80gRh rhodium acetate (Rh 2 (OAc) 4 ) is fully mixed and dissolved in an aqueous solution of acetic acid with a concentration of 60wt%, to obtain 350ml of impregnation solution, and 1L of 3mm in diameter, 2cm in length, and 0.80cm in pore volume 3 / g, the specific surface area is 1200cm 2 / g of coal-based cylindrical activated carbon carrier was impregnated in the above impregnating solution, and dried at 100°C for 3 hours to obtain the catalyst. The Zn content of the catalyst was determined by ICP to be 98g / L, the K content was 6.30g / L, and the Rh content was 2.80g / L.

[0026] The synthesis of vinyl acetate: 30ml catalyst is packed in the miniature fixed-bed reactor, with N 2 After leak test, use N 2 Fully purge the system, after the system heats up, turn off the N 2 , cut into acetylene in turn, turn on the acetic acid pump, control...

Embodiment 2

[0030] The preparation of catalyst: will contain 98g zinc acetate (Zn(OAc) 2 ), containing 6.30g potassium acetate (KOAc) and indium acetate (In(OAc) containing 2.80g In 3 ·6H 2 O) fully mixed and dissolved in acetic acid aqueous solution with a concentration of 60wt%, to obtain 350ml of impregnation solution, 1L of 3mm in diameter, 2cm in length, and 0.80cm in pore volume 3 / g, the specific surface area is 1200cm 2 / g of coal-based cylindrical activated carbon carrier was impregnated in the above impregnating solution, and dried at 100°C for 3 hours to obtain the catalyst. The Zn content of the catalyst was determined by ICP to be 98g / L, the K content was 6.30g / L, and the In content was 2.80g / L.

[0031] The synthesis of vinyl acetate: 30ml catalyst is packed in the miniature fixed-bed reactor, with N 2 After leak test, use N 2 Fully purge the system, after the system heats up, turn off the N 2 , cut into acetylene in turn, turn on the acetic acid pump, control the reac...

Embodiment 3

[0042] The preparation of catalyst: will contain 80g zinc acetate (Zn(OAc) 2 ), containing 3.00g potassium acetate (KOAc) and palladium acetate (Pd(OAc) containing 1.00gPd 2 ) is fully mixed and dissolved in an aqueous solution of acetic acid with a concentration of 60wt%, to obtain 350ml of impregnating solution, and 1L of 3mm in diameter, 2cm in length, and 0.60cm in pore volume 3 / g, the specific surface area is 1000cm 2 / g cylindrical coconut shell activated carbon carrier was immersed in the above impregnating solution, and dried at 80° C. for 3 hours to obtain the catalyst. The Zn content of the catalyst was measured by ICP as 80g / L, the K content was 3.00g / L, and the Pd content was 1.00g / L.

[0043] The synthesis of vinyl acetate: 30ml catalyst is packed in the miniature fixed-bed reactor, with N 2 After leak test, use N 2 Fully purge the system, after the system heats up, turn off the N 2 , cut into acetylene in turn, turn on the acetic acid pump, control the reac...

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Abstract

The present invention relates to a catalyst for synthesizing vinyl acetate through an acetylene method. A purpose of the present invention is to mainly solve the problem of not high activity of the catalyst of the acetylene gas phase method in the prior art. According to the present invention, the catalyst uses active carbon as a carrier, and active components comprise zinc acetate, potassium acetate and the compound of at least an element selected from a platinum group metal element and a IIIA metal element. With the technical scheme, the problem in the prior art is well solved. The catalyst of the present invention can be used for the industrial vinyl acetate production through the acetylene gas phase method.

Description

technical field [0001] The invention relates to a catalyst for synthesizing vinyl acetate by acetylene method, a preparation method of the vinyl acetate catalyst by acetylene gas phase method and a synthesis method of vinyl acetate by acetylene gas phase method. Background technique [0002] Vinyl acetate (VA for short) C ) is an important organic chemical raw material, which is widely used in the manufacture of polyvinyl acetate and polyvinyl alcohol and further processed for adhesives, coatings, vinylon fibers, fabric processing, emulsions, resins and films. At present, the industrial production methods of vinyl acetate include acetylene gas phase method and ethylene gas phase method. [0003] The production of vinyl acetate by acetylene process has gone through two stages of development: liquid phase and gas phase process. Before 1940, the liquid-phase process was mainly used, and the reaction was carried out at 30-70 °C under normal pressure, and the catalyst was mercu...

Claims

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Application Information

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IPC IPC(8): B01J23/60B01J23/08B01J23/06C07C69/15C07C67/04
Inventor 查晓钟杨运信
Owner CHINA PETROLEUM & CHEM CORP
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