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Catalyst used for production of ethylidene diacetate

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

Active Publication Date: 2016-05-18
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 used in the production of ethylene diacetate is provided. The characteristics of high selectivity of ethylene acetate

Method used

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  • Catalyst used for production of ethylidene diacetate
  • Catalyst used for production of ethylidene diacetate
  • Catalyst used for production of ethylidene diacetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of catalyst: the Co(OAc) that contains 8.98gCo, contains 2.75gLa and contains 3.25gZn 2 4H 2 O, La(OAc) 3 ·5H 2 O and zinc citrate (Zn 3 (C 6 h 5 o 7 ) 2 2H 2 O) fully mixed and dissolved in hydrochloric acid with a concentration of 8wt%, to obtain 400ml of impregnation solution, the specific surface of 1.0L was 165m 2 / g, spherical SiO with a pore volume of 0.98 and a diameter of 5.6 mm 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. The Co content of the catalyst analyzed by ICP was 8.98g / L, the La content was 2.75g / L, and the Zn content was 3.25g / L.

[0027] 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 7.5MP...

Embodiment 2

[0031] The preparation of catalyst: the Co(OAc) that contains 8.98gCo, contains 2.75gLa and contains 3.25gSr 2 4H 2 O, La(OAc) 3 ·5H 2 O and Sr(OAc) 2 0.5H 2 O is fully mixed and dissolved in pure water to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 165m 2 / g, spherical SiO with a pore volume of 0.98 and a diameter of 5.6 mm 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. The Co content of the catalyst analyzed by ICP is 8.98g / L, the La content is 2.75g / L, and the Sr content is 3.25g / L.

[0032] 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 7.5MPa, increase the stirring speed to 1200rpm, at the same time stir...

Embodiment 3

[0043] Preparation of catalyst: Co containing 7.00gCo, 1.00gCe and 1.00gZn 2 (CO) 8 、Ce(OAc) 3 ·6H 2 O and Zn(OAc) 2 2H 2 O 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 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. According to ICP analysis, the Co content of the catalyst is 7.00g / L, the Ce content is 1.00g / L, and the Zn content is 1.00g / L.

[0044] 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 7.5MPa, increase the stirring speed to 1200rpm, at the same...

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Abstract

The invention relates to a catalyst used for production of ethylidene diacetate, and is mainly to solve the problem of low activity and selectivity of an ethylidene diacetate catalyst in the prior art. According to a technical scheme of the invention, the ethylidene diacetate catalyst uses SiO2, Al2O3 or a mixture of SiO2 and Al2O3 as a carrier, and an active component comprises at least one selected from the group consisting of iron series elements, lanthanum series elements, and at least one selected from the group consisting of group-IIB and alkaline-earth metals; thus, the above-mentioned technical problem is well solved, and the catalyst can be applied in industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst used in the production of ethylene diacetate, a preparation method of the catalyst used in the production of ethylene diacetate and a synthesis method of ethylene 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 (Halc...

Claims

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Application Information

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IPC IPC(8): B01J23/83C07C69/16C07C67/36
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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