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Catalyst for acetylene-method vinyl acetate and synthesis method of vinyl acetate

A vinyl acetate and catalyst technology, applied in the field of acetylene gas phase method vinyl acetate catalyst, can solve the problems of high content of by-product benzene, low content of by-product benzene, etc., and achieve the effects of reducing benzene content and improving catalyst selectivity

Active 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

[0011] One of the technical problems to be solved by the present invention is the high content of by-product benzene in the vinyl acetate product existing in the prior art, and a new vinyl acetate catalyst is provided, which has the characteristics of low content of by-product benzene

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Catalyst preparation

[0027] (a) Take fullerene C 60 70 ml of toluene solution for dipping solution A (C 60 Concentration: 0.1 g / L), at room temperature 25 o C impregnated 100.0 g of coal-based columnar carbon with a diameter of 2.4 mm and a length of 2 cm (BET specific surface 1200 cm 2 / g, the total adsorption pore volume is 0.7 cm 3 / g) 3 hr at 80 o After drying for 4 hr under C conditions, the carrier precursor was obtained;

[0028] (b) The carrier precursor was placed in a nitrogen atmosphere, and the temperature was programmed to rise (10 o C / min) to 400 o Calcined at C for 3 hr, and naturally cooled to room temperature, the carrier was obtained;

[0029] (c) Preparation of impregnation solution: weigh 18.0 g of zinc acetate (molecular formula: Zn(CH 3 COO) 2 ) with 0.54 g potassium acetate (molecular formula: K(CH 3 COO)) solid at 60 o C was dissolved in pure water to make 180 ml of impregnation solution, and acetic acid was used to adjust the pH...

Embodiment 2

[0044] (1) Catalyst preparation

[0045] (a) Take fullerene C 70 70 ml of toluene solution for dipping solution A (C 70 Concentration: 0.1 g / L), at room temperature 25 o C impregnated 100.0 g of coal-based columnar carbon with a diameter of 2.4 mm and a length of 2 cm (BET specific surface 1200 cm 2 / g, the total adsorption pore volume is 0.7 cm 3 / g) 3 hr at 80 o After drying for 4 hr under C conditions, the carrier precursor was obtained;

[0046] (b) The carrier precursor was placed in a nitrogen atmosphere, and the temperature was programmed to rise (10 o C / min) to 400 o Calcined at C for 3 hr, and naturally cooled to room temperature, the carrier was obtained;

[0047] (c) Preparation of impregnation solution: weigh 18.0 g of zinc acetate (molecular formula: Zn(CH 3 COO) 2 ) with 0.54 g potassium acetate (molecular formula: K(CH 3 COO)) solid at 60 o C was dissolved in pure water to make 180 ml of impregnation solution, and acetic acid was used to adjust the pH...

Embodiment 3

[0054] (1) Catalyst preparation

[0055] (a) Take fullerene C 76 70 ml of toluene solution for dipping solution A (C 76 Concentration: 0.1 g / L), at room temperature 25 o C impregnated 100.0 g of coal-based columnar carbon with a diameter of 2.4 mm and a length of 2 cm (BET specific surface 1200 cm 2 / g, the total adsorption pore volume is 0.7 cm 3 / g) 3 hr at 80 o After drying for 4 hr under C conditions, the carrier precursor was obtained;

[0056] (b) The carrier precursor was placed in a nitrogen atmosphere, and the temperature was programmed to rise (10 o C / min) to 400 o Calcined at C for 3 hr, and naturally cooled to room temperature, the carrier was obtained;

[0057] (c) Preparation of impregnation solution: weigh 18.0 g of zinc acetate (molecular formula: Zn(CH 3 COO) 2 ) with 0.54 g potassium acetate (molecular formula: K(CH 3 COO)) solid at 60 o C was dissolved in pure water to make 180 ml of impregnation solution, and acetic acid was used to adjust the pH...

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Abstract

The invention relates to a catalyst for acetylene-method vinyl acetate synthesis and a preparation method thereof. The catalyst is mainly used for solving the problem in the prior art that the content of a byproduct benzene in the vinyl acetate product is high. According to the catalyst for acetylene-method vinyl acetate synthesis, through adopting the technical scheme that the catalyst comprises an active ingredient which is zinc acetate, a cocatalyst which is potassium acetate and a carrier which is fullerene modified activated carbon, the problem is better solved; and the catalyst can be applied to the industrial production of acetylene-method vinyl acetate.

Description

technical field [0001] The invention relates to a vinyl acetate catalyst for the acetylene gas phase method, a preparation method of the catalyst, and a synthesis method of vinyl acetate. Background technique [0002] Vinyl acetate, referred to as vinyl acetate (VAM), is an important organic chemical raw material, mainly used in the production of polyvinyl acetate (PVAc), polyvinyl alcohol (PVOH), vinyl acetate-ethylene copolymer emulsion (VAE) or copolymer resin (EVA), vinyl acetate-vinyl chloride copolymer (EVC), polyacrylonitrile comonomer and acetal resin and other derivatives, in coatings, pastes, adhesives, vinylon, film, leather processing, synthetic fibers, soil Improvement and other aspects have extensive development and utilization value. With the continuous progress of production technology, its application field is still expanding. [0003] In 2011, the global production capacity of vinyl acetate reached 7.434 million tons per year, mainly concentrated in Asia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/04C07C69/15C07C67/04
Inventor 邱鹏远杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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