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Catalyst for hydrogenation of acetic acid to produce ethyl acetate, preparation method thereof and method for hydrogenation of acetic acid to produce ethyl acetate

A technology of ethyl acetate and catalyst, which is applied in the field of catalyst and its preparation, can solve the problems of easy hydrolysis, severe heat release, high total investment, etc., and achieve the effect of simple process, low cost and high catalytic reaction activity

Active Publication Date: 2019-08-23
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two disadvantages: one is that the preparation technology of the catalyst is difficult and the stability in water is poor, and it is easy to be hydrolyzed; the other is that the reaction is exothermic and needs to be cooled with ice-salt water at a lower temperature
However, this method is only suitable for areas with abundant ethylene raw materials, and the total investment of this method is the highest among devices of the same scale.

Method used

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  • Catalyst for hydrogenation of acetic acid to produce ethyl acetate, preparation method thereof and method for hydrogenation of acetic acid to produce ethyl acetate
  • Catalyst for hydrogenation of acetic acid to produce ethyl acetate, preparation method thereof and method for hydrogenation of acetic acid to produce ethyl acetate
  • Catalyst for hydrogenation of acetic acid to produce ethyl acetate, preparation method thereof and method for hydrogenation of acetic acid to produce ethyl acetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to produce ethyl acetate of the present invention.

[0053] 1.33g SnCl 2 2H 2 O (Sinopharm), 2.47g of cobalt nitrate (Sinopharm) and 2.48g of nickel nitrate (Sinopharm), were dissolved in 9ml of 0.1M dilute hydrochloric acid solution to form a co-impregnation solution. The co-impregnation solution was impregnated to 8.3g γ-Al 2 o 3 (Sinopharm Corporation) carrier, then dried at 110°C for 5h, and then calcined at 500°C for 5h to obtain the catalyst precursor.

[0054] The catalyst precursor is reduced, and the reduction conditions include: the reduction temperature is 650°C, the reduction temperature rise rate is 1°C / min, and the reduction gas is H 2 , H 2 The volume space velocity is 3000h -1 , the reduction time is 4h. Catalyst C-1 is obtained.

[0055] The composition of catalyst C-1 is: 5% by weight Ni, 5% by weight Co, 7% by weight Sn and 83% by wei...

Embodiment 2

[0057] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to produce ethyl acetate of the present invention.

[0058] Dissolve 0.877g of stannous oxalate, 4.24g of cobalt acetate, and 4.95g of nickel nitrate in 8.3ml of 0.1M dilute hydrochloric acid solution to form a co-impregnation solution. The co-impregnation solution was impregnated to 7.5g γ-Al 2 o 3 carrier, then dried at 110°C for 5h, and then calcined at 500°C for 5h to obtain the catalyst precursor.

[0059] According to the method of Example 1, the catalyst precursor is reduced to obtain catalyst C-2, which consists of: 10% by weight Ni, 10% by weight Co, 5% by weight Sn and 75% by weight γ-Al 2 o 3 ; Recorded as Ni(10)-Co(10)-Sn(5)-γ-Al 2 o 3 (75).

Embodiment 3

[0061] This example is used to illustrate the preparation method of the catalyst for the hydrogenation of acetic acid to produce ethyl acetate of the present invention.

[0062] 1.9g SnCl 2 2H 2 O. 3.46g of cobalt nitrate and 5.45g of nickel nitrate were dissolved in 8.3ml of 0.1M dilute hydrochloric acid solution to form a co-impregnation solution. The co-impregnation solution was impregnated to 7.2g γ-Al 2 o 3 on the carrier, dried at 110°C for 5h, and then calcined at 500°C for 5h to obtain the catalyst precursor.

[0063] According to the method of Example 1, the catalyst precursor is reduced to obtain catalyst C-3, which consists of: 11% by weight Ni, 7% by weight Co, 10% by weight Sn and 72% by weight γ-Al 2 o 3 ; Recorded as Ni(11)-Co(7)-Sn(10)-γ-Al 2 o 3 (72).

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Abstract

The invention discloses a catalyst for production of acetic ether from acetic acid through hydrogenation, a preparation method of the catalyst and a method for producing acetic ether from acetic acid through hydrogenation. The catalyst comprises active components including Ni, Co and Sn and a carrier after reductive activation; the catalyst comprises, by total weight, 1%-20% of Ni, 1%-10% of Co, 1%-10% of Sn and 60%-97% of the carrier. If the catalyst is used for production of acetic ether from acetic acid through hydrogenation, ethyl acetate can be produced from acetic acid highly selectively, no ethanol is produced, and the process is simple, environment-friendly and relatively low in cost.

Description

technical field [0001] The invention discloses a catalyst for hydrogenation of acetic acid to produce ethyl acetate and a preparation method thereof, and a method for hydrogenation of acetic acid to produce ethyl acetate. Background technique [0002] Ethyl acetate, also known as ethyl acetate, is a widely used bulk fine chemical product and an important organic chemical raw material. It is also a very important solvent for environmental protection industry. It can be used in paint coatings, photosensitive materials, Production of drug extraction, herbicides, fruit flavors, and beverage flavors; it can also be used in transportation as a gasoline additive. At present, the global market demand is strong. Due to the improvement of the quality of life, people's requirements for environmental protection are becoming more and more stringent. It is the general trend to use high-grade solvents in the production of coating inks. As a high-grade solvent, the domestic application of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/835C07C67/00C07C69/14
CPCB01J23/835C07C67/00C07C69/14
Inventor 田树勋程继红狄伟孙守理孙琦
Owner CHNA ENERGY INVESTMENT CORP LTD
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