Ethylidene diacetate catalyst and ethylidene diacetate synthesis method

A technology for the synthesis of diethylene acetate, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxides/metal hydroxide catalysts, etc., can solve the problems of low selectivity and diethylene acetate Low ester yield and other problems, to achieve the effect of improving yield and selectivity, improving activity and stability

Active Publication Date: 2016-02-10
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 low selectivity of diacetate, and a new catalyst for diacetate is provided, which has the advantages of high yield of diacetate and the high sensitivity to diacetate. The characteristics of high selectivity of ethylene acetate

Method used

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  • Ethylidene diacetate catalyst and ethylidene diacetate synthesis method
  • Ethylidene diacetate catalyst and ethylidene diacetate synthesis method
  • Ethylidene diacetate catalyst and ethylidene diacetate synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Preparation of the catalyst: the Co containing 8.56gCo and the Co containing 2.97gIn 2 (CO) 8 、In(OAc) 3 ·6H 2 O is fully mixed and dissolved in a concentration of 10wt% acetic acid aqueous solution to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 170m 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 3 hours and dried at 100° C. to obtain the catalyst.

[0024] 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 8.0MPa, increase the stirring speed to 1200rpm, at the same time stir and heat up to the reaction temperature, control the reaction temperature to 175°C, the molar ratio of carbon monoxi...

Embodiment 2

[0028] Catalyst preparation: Co containing 8.56gCo and Co containing 2.97gV 2 (CO) 8 , VCl 3 Fully mix and dissolve in 10wt% acetic acid aqueous solution to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 170m 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 3 hours and dried at 100° C. to obtain the catalyst.

[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 8.0MPa, increase the stirring speed to 1200rpm, at the same time stir and heat up to the reaction temperature, control the reaction temperature to 175°C, the molar ratio of carbon monoxide and hydrogen is 2:1, continue the reaction for 7.5...

Embodiment 3

[0033] Preparation of the catalyst: the Co containing 8.56gCo and the Co containing 2.97gPr 2 (CO) 8 , Cl 3 Pr·6H 2 O is fully mixed and dissolved in an aqueous hydrochloric acid solution with a concentration of 8wt% to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 170m 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 3 hours and dried at 100° C. to obtain the catalyst.

[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 8.0MPa, increase the stirring speed to 1200rpm, at the same time stir and heat up to the reaction temperature, control the reaction temperature to 175°C, the molar ratio of car...

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Abstract

The invention relates to an ethylidene diacetate catalyst and an ethylidene diacetate synthesis method, and aims to solve the problems of low activity and selectivity of conventional ethylidene diacetate catalysts. The carrier of the provided catalyst includes SiO2, Al2O3, or a mixture of SiO2 and Al2O3, and the active component is composed of Cobalt and at least one selected from indium, vanadium, and praseodymium. The catalyst solves the problems mentioned above and can be applied to the industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst of ethylene diacetate and a method for synthesizing 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 (Halcon) company and the British Petroleum (BP) company successively A new process for the production of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/825B01J23/847B01J23/83C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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