Catalyst for synthesizing ethylidene diacetate and application of catalyst

A technology of diethylene acetate and catalyst, which is applied in the direction of physical/chemical process catalyst, carboxylate preparation, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of low yield of diacetate, Low selectivity and other issues, 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 this invention is the problem of low yield and selectivity of ethylene d

Method used

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  • Catalyst for synthesizing ethylidene diacetate and application of catalyst
  • Catalyst for synthesizing ethylidene diacetate and application of catalyst
  • Catalyst for synthesizing ethylidene diacetate and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] [Example 1]

[0025] Preparation of the catalyst: the Ru(OAc) containing 5.80gRu, 2.50gCr and 1.25gBe 3 ·3H 2 O, Cr (OAc) 3 ·6H 2 O and BeO are thoroughly mixed and dissolved in hydrochloric acid to obtain 500ml of immersion liquid, and 1.0L of spherical SiO with a diameter of 5.6mm 2 The carrier is immersed in the above-mentioned impregnating solution, and allowed to stand for 3h to dry at 100℃. 2 The temperature is increased to 500° C. and calcined for 5 hours to obtain the catalyst.

[0026] Synthesis of ethylene diacetate: Add 1.5 mol acetic acid, 0.05 mol catalyst and 0.45 mol methyl acetate into a 1.5L titanium reactor, first vent the air in the kettle with argon, then pressurize to 2.0MPa, and then pass in carbon monoxide And hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1500rpm, while stirring and heating to increase the reaction temperature, control the reaction temperature to 181℃, the molar ratio of carbon monoxide to hydrogen is 2:1, con...

Example Embodiment

[0048] [Example 2]

[0049] The preparation of the catalyst: will contain 5.80gRu, 2.50gCr and 1.25gM Ru(NO 3 ) 3 ·3H 2 O, Cr(NO 3 ) 3 ·9H 2 O and MgSO 4 ·H 2 O is thoroughly mixed and dissolved in pure water to obtain 500ml of immersion liquid, and 1.0L of spherical Al with a diameter of 5.6mm 2 O 3 The carrier is immersed in the above-mentioned impregnating solution, allowed to stand for 3 hours and dried at 80° C., and then heated to 400° C. for 5 hours in a He atmosphere to obtain the catalyst.

[0050] Synthesis of ethylene diacetate: Add 1.5 mol acetic acid, 0.05 mol catalyst and 0.45 mol methyl acetate into a 1.5L titanium reactor, first vent the air in the kettle with argon, then pressurize to 2.0MPa, and then pass in carbon monoxide And hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1500rpm, while stirring and heating to increase the reaction temperature, control the reaction temperature to 181℃, the molar ratio of carbon monoxide to hydrogen is 2:...

Example Embodiment

[0053] [Example 3]

[0054] Preparation of the catalyst: RuCl containing 5.80gRu, 2.50gCr and 1.25gCa 3 ·3H 2 O, CrCl 3 ·6H 2 O and Ca (NO 3 ) 2 ·4H 2 O. Mix thoroughly and dissolve in hydrochloric acid to obtain 500ml of immersion liquid, and add 1.0L of spherical Al with a diameter of 5.6mm 2 O 3 The carrier is immersed in the above-mentioned impregnating solution, allowed to stand for 3 hours and dried at 120° C., and then heated to 600° C. in an Ar atmosphere and calcined for 5 hours to obtain the catalyst.

[0055] Synthesis of ethylene diacetate: Add 1.5 mol acetic acid, 0.05 mol catalyst and 0.45 mol methyl acetate into a 1.5L titanium reactor, first vent the air in the kettle with argon, then pressurize to 2.0MPa, and then pass in carbon monoxide And hydrogen until the pressure is 7.8MPa, increase the stirring speed to 1500rpm, while stirring and heating to increase the reaction temperature, control the reaction temperature to 181℃, the molar ratio of carbon monoxide to h...

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Abstract

The invention relates to a catalyst for synthesizing ethylidene diacetate, a preparation method of the catalyst for synthesizing ethylidene diacetate and application of the catalyst in the synthesis of ethylidene diacetate. According to the catalyst, the preparation method and the application, the problems that a catalyst for synthesizing ethylidene diacetate in the prior art is relatively low in activity and selectivity are mainly solved. The catalyst comprises a carrier as well as ruthenium, chromium and alkaline earth metal which are loaded to the carrier, wherein the content of ruthenium is 3.0g/L-15.0g/L, the content of chromium is 1.0g/L-5.0g/L, and the content of alkaline earth metal 0.5g/L-5.0g/L; the carrier is selected from at least one of silicon oxide and aluminum oxide. According to the technical scheme, the technical problems are well solved. The catalyst can be applied to the industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst for synthesizing diethylene acetate, a preparation method and a synthesis method of diethylene acetate. 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 proc...

Claims

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Application Information

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IPC IPC(8): B01J23/652C07C69/16C07C67/293
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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