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Catalyst for producing ethylidene diacetate

A technology of diethylene acetate and catalysts, which can be used in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., and can solve the problems of low selectivity and diethylene acetate yield Low, high selectivity of diethylene acetate, etc., to achieve the effect of improving yield and selectivity, improving activity and stability

Active Publication Date: 2016-03-23
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 yield and selectivity of ethylene diacetate, and a catalyst for producing ethylene diacetate is provided, which has a high yield of ethylene diacetate Features of high selectivity to diethylene acetate

Method used

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  • Catalyst for producing ethylidene diacetate
  • Catalyst for producing ethylidene diacetate
  • Catalyst for producing ethylidene diacetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of catalyst: Co containing 8.60gCo, 2.40gK and 3.48gNb 2 (CO) 8 , KOAc and NbCl 5 Fully mix and dissolve in ethanol to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 167m 2 / g, spherical SiO with a pore volume of 0.95 and a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 100° C. to obtain the catalyst. After analysis, the Co content of the catalyst was 8.60g / L, the K content was 2.40g / L, and the Nb content was 3.48g / L.

[0029] Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monoxide and hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1200rpm, while stirring and heating to the reaction temperature, control the reaction temperature t...

Embodiment 2

[0033] Catalyst preparation: Co containing 8.60gCo, 2.40gK and 3.48gSb 2 (CO) 8 , KOAc and Cl 3 Sb is fully mixed and dissolved in acetic acid with a concentration of 10wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 167m 2 / g, spherical SiO with a pore volume of 0.95 and a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 100° C. to obtain the catalyst. After analysis, the Co content of the catalyst was 8.60g / L, the K content was 2.40g / L, and the Sb content was 3.48g / L.

[0034]Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monoxide and hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1200rpm, while stirring and heating to the reaction temperatu...

Embodiment 3

[0045] Preparation of catalyst: Co(OAc) containing 7.00gCo, containing 1.00gRb and containing 1.00gV 2 4H 2 O, RbNO 3 and VCl 3 Fully mixed and dissolved in acetic acid with a concentration of 10wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 150m 2 / g, spherical Al with a pore volume of 0.90 and a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 2 hours and dried at 80° C. to obtain the catalyst. After analysis, the Co content of the catalyst is 7.00g / L, the Rb content is 1.00g / L, and the V content is 1.00g / L.

[0046] Synthesis of diethylene acetate: Add 1.0mol acetic acid, 0.05mol catalyst, 0.10mol methyl iodide and 0.45mol methyl acetate into a 500ml titanium reactor, first use argon to discharge the air in the kettle and then pressurize to 2.0MPa, Then feed carbon monoxide and hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1200rpm, while stirring and heat...

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Abstract

The invention relates to a catalyst for producing ethylidene diacetate, and mainly solves the problem that a catalyst for ethylidene diacetate in the prior art is relatively low in activity and selectivity. According to the technical scheme, through adoption of the catalyst for the ethylidene diacetate, SiO2, Al2O3 or a mixture of SiO2 and Al2O3 serves as a carrier of the catalyst, and active components comprise at least one kind of metal elements selected from iron series elements, alkali metal elements and at least one kind of metal elements selected from VB and VA groups, the technical problem is solved well; and the catalyst can be used for industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst for producing diethylene acetate, a method for preparing the catalyst for diacetate and a method for synthesizing the diacetate. Background technique [0002] Vinyl acetate (vinylacetate, VAC or VAM for short), is a colorless, transparent, flammable liquid at room temperature with a sweet ether fragrance. It is one of the most productive organic chemical raw materials in the world, widely used in the production of polyvinyl acetate (PVAc), polyvinyl alcohol, coatings, pastes, adhesives, vinylon, films, vinyl copolymer resins, acetal resins A series of chemical and chemical fiber products are widely used in various industries. [0003] The production of vinyl acetate adopts ethylene gas-phase method and acetylene gas-phase method both at home and abroad, which belong to the petrochemical process route. Since the rise of C1 chemistry, in the 1980s, the American Halcon (Halcon) company and the British Petroleum (BP) co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847B01J23/843C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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