Supported ethylidene diacetate catalyst

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 No high problems, to achieve the effect of improving yield and selectivity, improving activity and stability

Active 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 yield of ethylene diacetate and low selectivity, and a new supported catalyst for 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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  • Supported ethylidene diacetate catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation of catalyst: the Co(OAc) that contains 6.50gCo, contains 2.90gLa and contains 1.35gLi 2 4H 2 O, La(OAc) 3 6H 2 O and LiOAc were fully mixed and dissolved in pure water to obtain 500ml of impregnation solution, and 1.0L of spherical SiO with a diameter of 5.6mm 2 The carrier was immersed in the above impregnating solution, and dried at 100°C for 3 hours. 2 The catalyst was obtained by raising the temperature to 500° C. and calcining for 5 h in the atmosphere.

[0025] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue t...

Embodiment 2

[0048] Preparation of the catalyst: Co(NO 3 ) 2 6H 2 O, La(NO 3 ) 3 6H 2 O and NaCl are fully mixed and dissolved in pure water to obtain 500ml of immersion solution, and 1.0L of spherical Al with a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 3 hours, dried at 80° C., and then heated to 400° C. and calcined for 5 hours in a He atmosphere to obtain the catalyst.

[0049] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue the reaction for 8.5h, stop the reaction.

[0050] Product an...

Embodiment 3

[0053] CoCl containing 6.50gCo, 2.90gLa and 1.35gK 2 6H 2 O, LaCl 3 7H 2 O and KNO 3 Fully mix and dissolve in pure water to obtain 500ml of impregnation solution, and 1.0L of spherical Al with a diameter of 5.6mm 2 o 3 The carrier was immersed in the impregnating solution, left to stand for 3 hours, dried at 120° C., and then heated to 600° C. and calcined for 5 hours in an Ar atmosphere to obtain the catalyst.

[0054] Synthesis of diethylene acetate: Add 1.5mol acetic acid, 0.05mol catalyst and 0.45mol methyl acetate into a 1.5L titanium reactor, first use argon to exhaust the air in the kettle, then pressurize to 2.0MPa, and then introduce carbon monoxide And hydrogen until the pressure is 8.3MPa, increase the stirring speed to 1500rpm, while stirring and heating to the reaction temperature, control the reaction temperature to 174°C, the molar ratio of carbon monoxide to hydrogen is 2:1, continue the reaction for 8.5h, stop the reaction.

[0055] Product analysis: ...

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Abstract

The invention relates to a supported ethylidene diacetate catalyst and a preparation method thereof, and mainly aims to solve the problem of relatively low activity and selectivity of an ethylidene diacetate catalyst in the prior art. The problem can be well solved by adopting a technical scheme that the catalyst comprises a carrier and cobalt, lanthanum and alkali metal which are supported on the carrier, wherein the content of cobalt is 3.0-15.0g / L, the content of lanthanum is 1.0-5.0g / L, and the content of alkali metal is 0.5-5.0g / L; and the carrier is at least one of silicon oxide and aluminum oxide. The catalyst can be used in industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a supported diethylene acetate catalyst, a preparation method and a synthesis method of diacetate. Background technique [0002] Vinyl acetate, namely vinyl acetate (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 at home and abroad, which belong to the petrochemical process route. Since the rise of C1 chemistry, in the 1980s, American Halcon (Halcon) company and British Petroleum (BP) company successively A new process for the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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