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Ethylidene diacetate catalyst and production method thereof

A technology of ethylene diacetate and production method, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low selectivity, ethylene diacetate Problems such as low ester yield, to achieve the effect of improving yield and selectivity, improving activity and stability

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 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 production method thereof
  • Ethylidene diacetate catalyst and production method thereof
  • Ethylidene diacetate catalyst and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of catalyst: the RhCl that contains 6.82gRh, contains 1.54gLi and contains 3.53gSn 3 ·3H 2 O, LiCl and Sn(NO 3 ) 2 Fully mix and dissolve in pure water to obtain 400ml of impregnation solution, and the specific surface of 1.0L is 168m 2 / g, spherical SiO with a pore volume of 0.94 and a diameter of 5.6 mm 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. The Rh content of the catalyst was determined to be 6.82g / L, the Li content was 1.54g / L, and the Sn content was 3.53g / L.

[0028] 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 6.8MPa, increase the stirring speed to 1200rpm, while stirring and heating to the reaction tem...

Embodiment 2

[0032] The preparation of catalyst: the RhCl that contains 6.82gRh, contains 1.54gLi and contains 3.53gBi 3 ·3H 2 O, LiCl, and BiCl 3 Fully mix and dissolve 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 168m 2 / g, spherical SiO with a pore volume of 0.94 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. The measured Rh content of the catalyst was 6.82g / L, the Li content was 1.54g / L, and the Bi content was 3.53g / L.

[0033] 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 6.8MPa, increase the stirring speed to 1200rpm, whi...

Embodiment 3

[0044] The preparation of catalyst: the Rh(OAc) that contains 10.00gRh, contains 2.00gK and contains 5.00gSn 3 、K 2 SO 4 and SnCl 2 2H 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 200m 2 / g, spherical Al with a pore volume of 1.00 and a diameter of 5.6mm 2 o 3 The carrier was immersed in the above impregnating solution, left to stand for 3 hours and dried at 120° C. to obtain the catalyst. The measured Rh content of the catalyst is 10.00g / L, the K content is 2.00g / L, and the Sn content is 5.00g / L.

[0045] 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 6.8MPa, increase the stirring speed to 1200rpm, whi...

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Abstract

The invention relates to an ethylidene diacetate catalyst and a production method thereof 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 rhodium, alkali metals and at least one metal element selected from IVA and VA, 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 diacetate catalyst, a production method of the diacetate catalyst and a synthesis method of the 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 proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62B01J23/644C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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