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Preparation method of catalyst for synthesizing vinyl acetate by virtue of acetylene method and synthetic method of vinyl acetate

A technology of vinyl acetate and synthesis method, applied in the preparation of organic compounds, preparation of carboxylate, chemical instruments and methods, etc., can solve problems such as low catalyst activity, and achieve the effect of improving space-time yield

Inactive Publication Date: 2015-04-29
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 catalyst activity in the prior art, and a new preparation method of vinyl acetate catalyst is provided, and the catalyst prepared by this method has the characteristics of high activity

Method used

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  • Preparation method of catalyst for synthesizing vinyl acetate by virtue of acetylene method and synthetic method of vinyl acetate
  • Preparation method of catalyst for synthesizing vinyl acetate by virtue of acetylene method and synthetic method of vinyl acetate

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Experimental program
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Effect test

Embodiment 1

[0020] 1. Catalyst preparation method

[0021] (A) Carrier preparation: measure 1L with a diameter of 3 mm, a length of 2 cm, and a pore volume of 0.8 cm 3 / g, the specific surface area is 1200 cm 2 / g of coal cylindrical activated carbon is placed in the ALLANCE series of γ-ray radiation device, under the condition of 30 ℃, 1000Gy / h 60 Co-γ rays are irradiated for 24 hours to obtain the carrier.

[0022] (B) Impregnation: impregnate the above-mentioned 1L carrier with 630ml impregnation solution. Of which Zn in the dipping solution (OAc) 2 The content is 130 g, the potassium acetate content is 6.5 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% of acetic acid and 30 wt% of water in weight percentage).

[0023] (C) Drying: drying at 100°C to obtain the catalyst.

[0024] 2. Catalyst evaluation

[0025] The catalyst synthesized by the above method was evaluated in a laboratory microreactor. The evaluation conditions are: catalyst load...

Embodiment 2

[0036] 1. Catalyst preparation method

[0037] (A) Carrier preparation: measure 1L with a diameter of 3 mm, a length of 2 cm, and a pore volume of 0.8 cm 3 / g, the specific surface area is 1200 cm 2 / g coconut shell-shaped cylindrical activated carbon is placed in the ALLANCE series γ-ray radiation device, at 30 ℃, 1000Gy / h 60 Co-γ rays are irradiated for 24 hours to obtain the carrier.

[0038] (B) Impregnation: impregnate the above-mentioned 1L carrier with 630ml impregnation solution. Of which Zn in the dipping solution (OAc) 2 The content is 130 g, the potassium acetate content is 6.5 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% of acetic acid and 30 wt% of water in weight percentage).

[0039] (C) Drying: drying at 100°C to obtain the catalyst.

[0040] 2. Catalyst evaluation

[0041] The catalyst synthesized by the above method was evaluated in a laboratory microreactor. The evaluation conditions are: catalyst loading: 30ml ...

Embodiment 3

[0044] 1. Catalyst preparation method

[0045] (A) Carrier preparation: measure 1L with a diameter of 3 mm, a length of 2 cm, and a pore volume of 0.8 cm 3 / g, the specific surface area is 1200 cm 2 / g of apricot shell cylindrical activated carbon is placed in the ALLANCE series of γ-ray radiation device, at 30 ℃, 1000Gy / h 60 Co-γ rays are irradiated for 24 hours to obtain the carrier.

[0046] (B) Impregnation: impregnate the above-mentioned 1L carrier with 630ml impregnation solution. Of which Zn in the dipping solution (OAc) 2 The content is 130 g, the potassium acetate content is 6.5 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% of acetic acid and 30 wt% of water in weight percentage).

[0047] (C) Drying: drying at 100°C to obtain the catalyst.

[0048] 2. Catalyst evaluation

[0049] The catalyst synthesized by the above method was evaluated in a laboratory micro-reactor. The evaluation conditions are: catalyst loading: 30ml ...

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Abstract

The invention relates to a preparation method of a catalyst for synthesizing vinyl acetate by virtue of an acetylene gas phase method, the catalyst and a synthetic method of vinyl acetate. According to the preparation method of the catalyst, the catalyst and the synthetic method of vinyl acetate, the problem of low catalyst activity in the prior art is mainly solved. The catalyst comprises a carrier, 50g / L-200g / L zinc acetate and 0-10g / L of potassium acetate. The preparation method comprises the following steps: (a) radiating the activated carbon by virtue of 60 Co-gamma ray to obtain the carrier; (b) loading required amounts of zinc acetate and potassium acetate by virtue of a dipping method; and (c) drying to obtain the catalyst. According to the technical scheme, the problem is well solved. The catalyst can be applied to the industrial production for synthesizing the vinyl acetate by virtue of the acetylene method.

Description

technical field [0001] The invention relates to a preparation method of a vinyl acetate catalyst in an acetylene gas phase method, a catalyst and a synthesis method of vinyl acetate. Background technique [0002] Vinyl acetate (VAC for short) is an important organic chemical raw material, widely used in the manufacture of polyvinyl acetate, polyvinyl alcohol and further processing for adhesives, coatings, vinylon fibers, fabric processing, emulsions, resins and films, etc. aspect. At present, the industrial production methods of vinyl acetate include acetylene gas phase method and ethylene gas phase method. [0003] The synthesis of vinyl acetate by the acetylene method refers to the reaction of acetylene and acetic acid as raw materials under the action of zinc acetate catalyst to produce vinyl acetate. US Patent (US166482, Production of vinylacetate) reported the use of catalyst Zn(OAc) 2 / C, synthesized vinyl acetate. Many scholars at home and abroad are trying to imp...

Claims

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Application Information

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IPC IPC(8): B01J31/04C07C69/15C07C67/04
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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