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: 2016-01-27
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
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  • Supported ethylidene diacetate catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of catalyst: RhCl containing 6.57gRh, 3.30gCu, 2.50gLa and 1.50gLi 3 ·3H 2 O, CuCl 2 2H 2 O, LaCl 3 ·7H 2 O and LiCl are 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 2 hours. 2 Calcined at 500° C. for 4 h in the atmosphere to obtain the catalyst.

[0026] Synthesis of diethylene acetate: Add 1.5mol 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 7.0MPa, increase the stirring speed to 1500rpm, stir and heat up to the reaction temperature at the same time, control the reaction temperature to 168°C, the molar ratio of carbon monoxide and hydrogen is 2:1, continue the reaction for 7....

Embodiment 2

[0085] The preparation of catalyst: the Rh(OAc) that contains 6.57gRh, contains 3.30gCu, contains 2.50gLa and contains 1.50gLi 3 、Cu(OAc) 2 2H 2 O, La(OAc) 3 ·6H 2 O and LiOAc are fully mixed and dissolved in a concentration of 10wt% acetic acid aqueous solution to obtain 500ml of impregnation solution, and 1.0LAl 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 2 hours, dried at 80° C., and calcined at 400° C. for 4 hours in a He atmosphere to obtain the catalyst.

[0086] Synthesis of diethylene acetate: Add 1.5mol 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 7.0MPa, increase the stirring speed to 1500rpm, stir and heat up to the reaction temperature at the same time, control the reaction temperature to 168°C, the molar ratio of ...

Embodiment 3

[0090] The preparation of catalyst: will contain 6.57gRh, contain 3.30gCu, contain the Rh(NO 3 ) 3 2H 2 O, Cu(NO 3 ) 2 ·3H 2 O, La(NO 3 ) 3 ·6H 2 O and LiCl are fully mixed and dissolved in pure water to obtain 500ml of impregnation solution, and 1.0LAl 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 2 hours, dried at 120° C., and calcined at 600° C. for 4 hours in an Ar atmosphere to obtain the catalyst.

[0091] Synthesis of diethylene acetate: Add 1.5mol 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 7.0MPa, increase the stirring speed to 1500rpm, stir and heat up to the reaction temperature at the same time, control the reaction temperature to 168°C, the molar ratio of carbon monoxide and hydrogen is 2:1, continue the reacti...

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Abstract

The invention relates to a supported ethylidene diacetate catalyst. The catalyst mainly overcomes the problems of low activity and selectivity of ethylidene diacetate catalysts in the prior art. The supported ethylidene diacetate catalyst provided by the invention comprises a supporter and rhodium, copper, lanthanum and lithium which are loaded on the supporter, wherein the supporter is at least one selected from the group consisting of silicon oxide and aluminum oxide; and the supported ethylidene diacetate catalyst perfectly overcomes the above-mentioned technical problems and 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 (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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07C69/16C07C67/36
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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