Acetylene method vinyl acetate catalyst and preparation method thereof

A vinyl acetate and catalyst technology, applied in the field of acetylene gas phase method vinyl acetate catalyst, can solve problems such as low catalyst activity, and achieve the effect of improving space-time yield

Inactive Publication Date: 2015-03-25
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 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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  • Acetylene method vinyl acetate catalyst and preparation method thereof
  • Acetylene method vinyl acetate catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Catalyst preparation method

[0022] (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-based cylindrical activated carbon is placed in a microwave-heated quartz tube, and under the protection of He protective gas, microwave treatment is carried out for 30min with a power of 500W and a frequency of 2450MHZ to obtain the carrier.

[0023] (b) Impregnation: impregnate the above 1L carrier with 610ml of impregnation solution. Zn(OAc) in the immersion solution 2 The content is 120 g, the content of potassium acetate is 6.0 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% acetic acid and 30 wt% water).

[0024] (c) Drying: drying at 100°C to obtain the catalyst.

[0025] 2. Catalyst evaluation

[0026] The catalysts synthesized by the above method were evaluated in a laboratory microreactor. The evalua...

Embodiment 2

[0037] 1. Catalyst preparation method

[0038] (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-based cylindrical activated carbon placed in a microwave-heated quartz tube, in H 2 Under the protection of protective gas, microwave treatment was carried out at a power of 500W and a frequency of 2450MHZ for 30min to obtain the carrier.

[0039] (b) Impregnation: impregnate the above 1L carrier with 610ml of impregnation solution. Zn(OAc) in the immersion solution 2 The content is 120 g, the content of potassium acetate is 6.0 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% acetic acid and 30 wt% water).

[0040] (c) Drying: drying at 100°C to obtain the catalyst.

[0041] 2. Catalyst evaluation

[0042]The catalysts synthesized by the above method were evaluated in a laboratory microreactor. The evaluation...

Embodiment 3

[0045] 1. Catalyst preparation method

[0046] (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 cylindrical coconut shell activated carbon is placed in a microwave-heated quartz tube, under the protection of Ar protective gas, with a power of 500W, a frequency of 2450MHZ is used for microwave treatment for 30min to obtain the carrier.

[0047] (b) Impregnation: impregnate the above 1L carrier with 610ml of impregnation solution. Zn(OAc) in the immersion solution 2 The content is 120 g, the content of potassium acetate is 6.0 g, and the solvent in the impregnation solution is a mixed solvent of acetic acid and water (70 wt% acetic acid and 30 wt% water).

[0048] (c) Drying: drying at 100°C to obtain the catalyst.

[0049] 2. Catalyst evaluation

[0050] The catalysts synthesized by the above method were evaluated in a laboratory microreactor. The evaluation co...

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Abstract

The invention relates to a vinyl acetate catalyst, a preparation method and a vinyl acetate synthesis method which are mainly used for solving the problem of low catalyst activity in the prior art. In order to better solve the problem, the technical scheme adopted by the invention is as follows: the vinyl acetate catalyst provided by the invention comprises a carrier, 50-200 g/L zinc acetate and 0-10 g/L potassium acetate; the preparation method comprises the following steps: (a) performing microwave treating on activated carbon under a non-oxidizing atmosphere relative to the activated carbon to obtain the carrier; (b) loading the necessary dosage of zinc acetate and a cocatalyst by an impregnation method; (c) drying to obtain the catalyst. The vinyl acetate catalyst can be used in the industrial production of acetylene method vinyl acetate synthesis.

Description

technical field [0001] The invention relates to an acetylene vapor phase vinyl acetate catalyst, a preparation method of the 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 improve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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