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Catalyst for synthesizing ethylidene diacetate

A technology of diethylene acetate and catalysts, which can be used in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., and can solve the problems of low selectivity and diethylene acetate yield Low, high selectivity of diethylene acetate, to achieve the effect of improving activity and stability, improving yield and selectivity

Active Publication Date: 2016-03-23
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 low selectivity of diacetate, and a catalyst used for the synthesis of diacetate is provided, which has the advantages of high yield of diacetate The characteristics of high selectivity of diethylene acetate

Method used

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  • Catalyst for synthesizing ethylidene diacetate
  • Catalyst for synthesizing ethylidene diacetate
  • Catalyst for synthesizing ethylidene diacetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of catalyst: RhCl containing 6.20gRh, 3.00gCr and 3.10gCu 3 ·3H 2 O, CrCl 3 ·6H 2 O and copper citrate (Cu 2 C 6 h 4 o 7 2.5H 2 O) fully mixed and dissolved in hydrochloric acid with a concentration of 8wt%, to obtain 400ml of impregnation solution, 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 Rh content of the catalyst analyzed by ICP was 6.20 g / L, the Cr content was 3.00 g / L, and the Cu content was 3.10 g / L.

[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 ...

Embodiment 2

[0033] Preparation of catalyst: RhCl containing 6.20gRh, 3.00gCr and 3.10gLa 3 ·3H 2 O, CrCl 3 ·6H 2O and La(OAc) 3 ·5H 2 O is fully mixed and dissolved 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 Rh content of the catalyst analyzed by ICP was 6.20g / L, the Cr content was 3.00g / L, and the La content was 3.10g / L.

[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, while stirring and heating to the reaction temperature...

Embodiment 3

[0045] The preparation of catalyst: will contain 5.00gRh, contain 1.00gCr and contain 1.00gCu triphenylphosphine rhodium chloride (C 54 h 45 ClP 3 Rh), Cr(NO 3 ) 3 9H 2 O and CuCl 2 Fully mixed and dissolved in acetic acid with a concentration of 10wt%, 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 Rh content of this catalyst analyzed by ICP is 5.00g / L, the Cr content is 1.00g / L, and the Cu content is 1.00g / L.

[0046] 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, incr...

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Abstract

The invention relates to a catalyst for synthesizing ethylidene diacetate and mainly solves the problem that in the prior art, the ethylidene diacetate catalyst is relatively low in activity and selectivity. By adopting a technical scheme that the ethylidene diacetate catalyst uses SiO2, Al2O3 or a mixture thereof as a carrier and an active ingredient comprises at least one selected from platinum group metals, at least one selected from VIB, and at least one metal element selected from IB and lanthanide metal elements, the technical problem is better solved, and the catalyst can be used for industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst for synthesizing ethylene diacetate, a preparation method for the catalyst used for synthesizing ethylene diacetate and a synthesis method for 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/652B01J23/644B01J23/89B01J23/68C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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