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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 low selectivity, diacetic acid The problems of low ethylene yield and high selectivity of ethylene diacetate can achieve the effect of improving activity and stability, improving yield and selectivity

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 for the preparation of 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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  • Catalyst used in ethylidene diacetate preparation
  • Catalyst used in ethylidene diacetate preparation
  • Catalyst used in ethylidene diacetate preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The preparation of catalyst: will contain 6.10gRh, contain 2.90gSr and contain 2.90gSn rhodium acetate two ligands (Rh 2 (OAc) 4 ), Sr(OAc) 2 0.5H 2 O and stannous oxalate (SnC 2 o 4 ) is fully mixed and dissolved in hydrochloric acid with a concentration of 8wt%, to obtain 400ml of impregnating 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 6.10 g / L, the Sr content was 2.90 g / L, and the Sn content was 2.90 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 pressu...

Embodiment 2

[0033] The preparation of catalyst: will contain 6.10gRh, contain 2.90gSr and contain 2.90gLa rhodium acetate two ligands (Rh 2 (OAc) 4 ), Sr(OAc) 2 0.5H 2 O 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 this catalyst analyzed by ICP is 6.10g / L, the Sr content is 2.90g / L, and the La content is 2.90g / 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 7.5MPa, increase the stirring speed to 1200rpm, wh...

Embodiment 3

[0045] Preparation of catalyst: RhCl containing 5.00gRh, 1.00gBa and 1.00gGe 3 ·6H 2 O, BaCl 2 and GeCl 4 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 Rh content of the catalyst analyzed by ICP was 5.00 g / L, the Ba content was 1.00 g / L, and the Ge content was 1.00 g / 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 7.5MPa, increase the stirring speed to 1200rpm, while stirring and heating to the...

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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 platinum-family metals, at least one selected from alkaline earth metals and at least on metal element selected from IVA and lanthanide-series metal elements. 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 for the preparation of diethylene acetate, a preparation method of the catalyst used for the preparation of diacetate 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) compan...

Claims

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Application Information

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IPC IPC(8): B01J23/62B01J23/63B01J23/58C07C69/16C07C67/36
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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