Catalyst used in ethylidene diacetate preparation

A technology of ethylene diacetate and catalyst, applied in physical/chemical process catalyst, carbon monoxide or formate reaction preparation, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of ethylene diacetate yield. problems such as low yield and low selectivity, to achieve the effect of improving yield and selectivity, improving activity and stability

Active Publication Date: 2016-04-13
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 for the preparation of ethylene diacetate is provided. The characteristics of high selectivity of ethylene acetate

Method used

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  • Catalyst used in ethylidene diacetate preparation
  • Catalyst used in ethylidene diacetate preparation
  • Catalyst used in ethylidene diacetate preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of catalyst: CoCl containing 8.30gCo, 3.20gCe and 3.50gBi 2 ·6H 2 O, CeCl 3 ·6H 2 O and ammonium bismuth citrate (Bi(NH 3 ) 2 C 6 h 7 o 7 ·H 2 O) fully mixed and dissolved in pure water to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 165m 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 2 hours and dried at 100° C. to obtain the catalyst. The Co content of the catalyst analyzed by ICP is 8.30g / L, the Ce content is 3.20g / L, and the Bi content is 3.50g / L.

[0030] 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, while stirring...

Embodiment 2

[0034] Preparation of catalyst: CoCl containing 8.30gCo, 3.20gCe and 3.50gBe 2 ·6H 2 O, CeCl 3 ·6H 2 O and BeCl2 Fully mix and dissolve 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 0.95 and a diameter of 5.6mm 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 8.30g / L, the Ce content was 3.20g / L, and the Be content was 3.50g / L.

[0035] 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, while stirring and heating to the reaction temperature, control the react...

Embodiment 3

[0046] Preparation of catalyst: NiCl containing 7.00gNi, 1.00gSc and 1.00gBi 2 ·6H 2 O, Sc(OAc) 3 ·6H 2 O and Bi 2 (SO 4 ) 3 Fully mixed and dissolved in hydrochloric acid with a concentration of 8wt%, to obtain 400ml of impregnation solution, and the specific surface of 1.0L was 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. The Ni content of the catalyst analyzed by ICP was 7.00g / L, the Sc content was 1.00g / L, and the Bi content was 1.00g / L.

[0047] 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, while stirring...

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Abstract

The invention relates to a catalyst used in ethylidene diacetate preparation. The invention mainly aims at solving the problems of relatively low activity and selectivity of the ethylidene diacetate catalysts in prior arts. According to the adopted ethylidene diacetate catalyst, the catalyst adopts a carrier of SiO2 or Al2O3 or a mixture of the two; and active components comprise at least one selected from iron-series elements, at least one selected from IIIB elements, and at least one metal element selected from VA and alkaline earth metals. With the above technical scheme, the technical problem is well solved. The catalyst can be used in vinyl acetate industrial productions.

Description

technical field [0001] The invention relates to a catalyst used in the preparation of diethylene acetate, a preparation method of the catalyst used in the preparation of diacetate 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/843B01J23/83C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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