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Catalyst for preparing ethylidene diacetate

A technology of diethylene acetate and catalyst, which is applied in the direction of physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, carbon monoxide or formate reaction preparation, etc., and can solve the problem of low selectivity and diacetic acid Solve the problems of low yield of ethylene ester and high selectivity of diacetate 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 this invention is the problem of low yield and low selectivity of diacetate, and a catalyst used for preparing diacetate is provided, which has the advantages of high diacetate yield and low selectivity. The characteristics of high selectivity of diethylene acetate

Method used

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  • Catalyst for preparing ethylidene diacetate
  • Catalyst for preparing ethylidene diacetate
  • Catalyst for preparing ethylidene diacetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of catalyst: CoCl containing 8.50gCo, 3.20gB and 2.90gAu 2 ·6H 2 O, ammonium pentaborate ((NH 4 )B 5 o 8 ·8H 2 O) and NH 4 AuCl 4 2H 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 Co content of the catalyst was analyzed by ICP-MS to be 8.50 g / L, the B content to be 3.20 g / L, and the Au content to be 2.90 g / 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 6.8MPa, increase the stirring speed to 1200rpm, at t...

Embodiment 2

[0034] Preparation of catalyst: CoCl containing 8.50gCo, 3.20gB and 2.90gSr 2 ·6H 2 O, ammonium pentaborate ((NH 4 )B 5 o 8 ·8H 2O) and Sr(OAc) 2 0.5H 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 Co content of the catalyst was analyzed by ICP-MS to be 8.50g / L, the B content to be 3.20g / L, and the Sr content to be 2.90g / 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 6.8MPa, increase the stirring speed to 1200rpm, while sti...

Embodiment 3

[0046] Preparation of catalyst: NiCl containing 7.00gNi, 1.00gB and 1.00gCu 2 ·6H 2 O, boric acid (H 3 BO 3 ) and copper tartrate (C 4 h 4 o 6 Cu·XH 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 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 was analyzed by ICP-MS to be 7.00g / L, the B content was 1.00g / L, and the Cu 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 6.8MPa, increase the stirrin...

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Abstract

The invention relates to a catalyst for preparing ethylidene diacetate. The catalyst is mainly used for solving the problem in the prior art that catalysts for ethylidene diacetate are relatively low in activity and selectivity. Through adopting the technical scheme that the catalyst for ethylidene diacetate adopts SiO2, Al2O3 or a mixture of SiO2 and Al2O3 as a carrier, and active ingredients comprise at least one element selected from ferrous elements, at least one element selected from metalloid elements and at least one metal element selected from IB and alkaline-earth metals, the technical problem is better solved, and the catalyst can be applied to the industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst used for preparing diethylene acetate, a preparation method of the catalyst used for preparing 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 the British Petr...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/78B01J23/755B01J23/843B01J27/057C07C67/36C07C69/16
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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