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Catalyst for preparing alcohol by acetic ester hydrogenation as well as preparation method and application thereof

An acetate hydrogenation and catalyst technology, applied in chemical instruments and methods, hydroxyl compound preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve the shortage of crude oil resources and limit the promotion and development of chemical synthesis of ethanol , production conditions and high costs, to achieve the effects of low price, slow sintering, and less reaction by-products

Inactive Publication Date: 2011-01-05
江苏丹化煤制化学品工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the production equipment used in the production of ethanol by chemical synthesis requires high acid resistance and pressure resistance, the production conditions and costs are relatively high, and the current energy situation in my country is rich in coal, short of gas, and low in oil, and crude oil resources are relatively short. The raw material ethylene used in the synthesis method comes from non-renewable petroleum resources, which objectively limits the promotion and development of chemical synthesis of ethanol in my country, so my country generally does not use this method to produce ethanol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 187.2gCu(NO 3 ) 2 ·3H 2 O was placed in a beaker, and 1500g of distilled water was added to dissolve it completely; 82gNa 2 CO 3 Pour 124g of silica sol with a solid content of 25% into a three-necked flask, add 2000g of distilled water, stir to mix, and heat to 70°C for later use; while stirring Na 2 CO 3 Add the prepared copper salt solution to the mixed solution with silica sol, stir and heat up to 90°C, control the pH value at the end point of the reflux reaction to 7.2, and then bubble for 2 hours after the reaction, the catalyst is washed and filtered at 80 ℃ for 15 hours, then ground, and baked at 350 ℃ for 5 hours, and then pressed to form 3 × 5mm particles. The catalyst specific surface area of ​​above-mentioned preparation is 300m 2 / g, the pore volume is 0.3cm 3 / g, the average pore radius is 15nm.

[0027] The prepared catalyst was loaded into a tubular reactor with a diameter of 30mm, and the temperature was gradually raised to 220°C at 10°C / h under...

Embodiment 2

[0029] 187.2gCu(NO 3 ) 2 ·3H 2 O and 37.9g ​​Zn(NO 3 ) 2 ·6H 2 O was placed in a beaker, and 1500g of distilled water was added to dissolve it completely; 95.8g of Na 2 CO 3 Pour 124g of silica sol with a solid content of 25% into a three-necked flask, add 2000g of distilled water, stir to mix, and heat to 60°C for later use; while stirring Na 2 CO 3 Add the prepared mixed metal salt solution to the mixed solution with silica sol, stir and heat up to 95°C, control the pH value at the end point of the reflux reaction to 7.5, and then bubble for 2 hours after the reaction is completed. The catalyst is washed and filtered. Dry at 90°C for 12 hours, then grind, and bake at 400°C for 4 hours, and then press to form 3×5mm particles. The catalyst specific surface area of ​​above-mentioned preparation is 310m 2 / g, the pore volume is 0.8cm 3 / g, the average pore radius is 18nm.

[0030]The prepared catalyst was loaded into a tubular reactor with a diameter of 30mm, and the ...

Embodiment 3

[0032] 121.5gCu(NO 3 ) 2 ·3H 2 0 and 23.1gAl(NO 3 ) 3 9H 2 O was placed in a beaker, and 1500g of distilled water was added to dissolve it completely. 53.7gNa 2 CO 3 Pour it into a three-necked flask, add 2000g of distilled water, stir to dissolve it completely, and heat it to 80°C for later use; while stirring Na 2 CO 3 Add the prepared mixed metal salt solution into the solution, stir and heat up to 90°C, and control the pH value at the end point of the reflux reaction to be 7.6. Bubble for 2 hours after the reaction is completed. The catalyst is washed and filtered, and then dried at 60°C for 18 hours. , and then ground, baked at 400°C for 2 hours, and then pressed to form 3×5mm particles. The catalyst specific surface area of ​​above-mentioned preparation is 80m 2 / g, the pore volume is 0.2cm 3 / g, the average pore radius is 3nm.

[0033] The prepared catalyst was loaded into a tubular reactor with a diameter of 30mm, and the temperature was gradually raised to...

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Abstract

The invention discloses a catalyst for preparing alcohol by acetic ester hydrogenation as well as a preparation method and an application thereof, which is characterized in that the main catalyst of the catalyst is copper or copper oxide or a mixture of the copper and the copper oxide, and the cocatalyst can be also added, wherein the cocatalyst is one or more of oxides of zinc, manganese, chromium, calcium, barium, iron, nickel and magnesium; and the carrier is alumina or silica sol. The catalyst has high activity and high selectivity under the condition of low temperature and low pressure, thus greatly reducing the investment cost of permanent plants, lowering production energy consumption, being extremely beneficial for the industrial production, and having good stability and long service life. The catalyst of the invention is used to cause percent conversion of a reaction of converting the acetic ester into the alcohol is more than or equal to 80% and the selectivity of the alcohol is more than or equal to 95%.

Description

technical field [0001] The invention belongs to the field of catalyst chemistry, and in particular relates to a catalyst for preparing ethanol by hydrogenation of acetate, a preparation method and application thereof. Background technique [0002] Ethanol is widely used in food, chemical, pharmaceutical, dye, national defense and other industries, and it is also a very important clean energy. As a clean energy, ethanol can not only replace tetraethyl lead as an anti-knock agent for gasoline, but also produce ethanol gasoline as a vehicle fuel. Greatly reduce the pollution to the environment when gasoline is burned. Currently, 60% of ethanol production is used as vehicle fuel worldwide. Ethanol production methods are divided into fermentation methods using plant-based substances as raw materials and chemical synthesis methods using petroleum-based substances as raw materials. Fermentative ethanol production is the most basic industry in today's bio-industry. It mainly us...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/80B01J23/86B01J23/889C07C31/08C07C29/149
Inventor 吴晓金刘志刚胡晓鸣张学岭孔国杰
Owner 江苏丹化煤制化学品工程技术有限公司
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