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Catalyst for production of acetylene method vinyl acetate

A vinyl acetate and catalyst technology, applied in the field of acetylene gas phase method vinyl acetate synthesis, can solve problems such as low catalyst activity, and achieve the effects of improving activity and stability and improving 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 problem of low activity of acetylene-method vinyl acetate catalysts in the prior art, and a new catalyst for the production of acetylene-method vinyl acetate is provided, which has the characteristics of high activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation of catalyst: will contain 100g zinc acetate (Zn(OAc) 2 ), containing 6.30g potassium acetate (KOAc) and ammonium tellurate containing 2.90g Te ((NH 4 ) 2 TeO 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 100g / L, the K content to be 6.30g / L, and the Te content to be 2.90g / L.

[0025] 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...

Embodiment 2

[0029] The preparation of catalyst: will contain 100g zinc acetate (Zn(OAc) 2 ), containing 6.30g potassium acetate (KOAc) and manganese acetate (Mn(OAc) containing 2.90gMn 2 4H 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 measured by ICP is 100g / L, the K content is 6.30g / L, and the Mn content is 2.90g / L.

[0030] 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 reaction tem...

Embodiment 3

[0041] The preparation of catalyst: will contain 80g zinc acetate (Zn(OAc) 2 ), containing 3.00g potassium acetate (KOAc) and manganese acetate containing 1.00gMn (Mn(OAc) 2 4H 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 0.60cm 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 measured by ICP is 80g / L, the K content is 3.00g / L, and the Mn content is 1.00g / L.

[0042] 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 reaction tempera...

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Abstract

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

Description

technical field [0001] The invention relates to a catalyst used in the production of acetylene method vinyl acetate, a preparation method of the acetylene gas phase method vinyl acetate catalyst and a synthesis method of acetylene gas phase method vinyl acetate. 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): B01J27/057B01J23/34B01J23/06C07C67/04C07C69/15
Inventor 查晓钟杨运信
Owner CHINA PETROLEUM & CHEM CORP
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