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Catalyst for preparing acetone through gas phase catalytic ketonization of acetic acid and preparation method and application of catalyst

A technology for catalysts and catalyst supports, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, carbon-based compound preparation, etc. It can solve the problems of high loading capacity, complicated preparation process, and high catalyst cost , to achieve the effect of good anti-carbon deposition, simple preparation method and high selectivity

Active Publication Date: 2014-12-03
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no patent related to the production of acetone from acetic acid at home and abroad, and a kind of acetone for C is reported in the patent CN100363098C 2 -C 12 Aliphatic carboxylic acid ketocatalyst, the catalyst is based on alumina as the carrier, supported rare earth metals Ce, La, etc. Good activity, the preparation process is more complicated and the catalyst cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 5g of coconut shell charcoal and add it to 500ml of nitric acid solution with a concentration of 65wt%, and then heat and reflux at 220°C for 12h. After drying for 12 hours, it is ready for use.

[0026] Weigh 111.2g of zirconium oxychloride octahydrate to prepare a 0.2mol / L aqueous solution, add it to 5g of pretreated activated carbon, place it in a water bath at 80°C and evaporate to dryness, and dry the obtained sample in an oven at 100°C for 12 hours. The dried samples were in N 2 In the atmosphere, the temperature is raised to 400°C at 0.5°C / min for 4h, and the gas space velocity is 3000h -1 , and the catalyst carrier was obtained after cooling to room temperature.

[0027] Weigh 6.32g of ferric nitrate hydrate to prepare an aqueous solution, impregnate the same volume on the prepared carrier, let it stand for 4 hours, and then dry it in an oven at 100°C for 12 hours. The dried sample is heated in a He atmosphere at 1 °C / min, the temperature was raised to ...

Embodiment 2

[0031] Weigh 5g of coal-based carbon and add it to 1000ml of nitric acid solution with a concentration of 30wt%, then heat and reflux at 180°C for 12h, suction filter after the treatment is completed, wash the obtained filter cake with deionized water until neutral, and bake at 120°C Dry for 10h and set aside.

[0032] Weigh 75g of zirconium oxynitrate to prepare a 0.2mol / l aqueous solution, then add 0.01g of palladium chloride and 5g of pretreated activated carbon, evaporate to dryness in a water bath at 80°C, and dry in an oven at 120°C for 10 hours. The dried samples were in N 2 In the atmosphere, the temperature was raised to 400°C at 0.5°C / min and calcined for 4h, and the sample obtained after cooling to room temperature was the catalyst carrier.

[0033] Weigh 6.32g of ferric nitrate hydrate and 3.01g of cobalt nitrate hydrate to prepare a mixed aqueous solution, impregnate the same volume on the prepared carrier, let it stand for 4 hours, and then dry it in an oven at ...

Embodiment 3

[0036] Weigh 10g of shell charcoal and add it to 1000ml of nitric acid solution with a concentration of 25wt%, and then heat and reflux at 200°C for 12h. Dry overnight.

[0037] Weigh 65.6g of zirconium oxynitrate to prepare a 0.2mol / l aqueous solution, then add 10g of pretreated activated carbon and evaporate to dryness in a water bath at 80°C, and dry the obtained sample in an oven at 100°C for 10h. The dried samples were in N 2 In the atmosphere, the temperature was raised to 400°C at 0.5°C / min and calcined for 4h to obtain the catalyst carrier. N 2 The airspeed is 4000h -1 .

[0038] Weigh 12.65g of ferric nitrate hydrate to prepare an aqueous solution, impregnate it in an equal volume on the prepared carrier, let it stand for 4 hours, and then dry it in an oven at 120°C for 18 hours. 2 In the atmosphere, the temperature was raised to 400°C at 1°C / min and calcined for 5h to obtain the catalyst.

[0039] The composition of the obtained catalyst is: activated carbon 20%,...

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Abstract

The invention discloses a catalyst for preparing acetone through gas phase catalytic ketonization of acetic acid. The catalyst is characterized by consisting of the following components in percentage by weight: 5-40 percent of activated carbon, 55-85 percent of oxide carrier and 3-25 percent of active component oxide. The catalyst disclosed by the invention has the advantages of simple preparation method, low cost, high activity and high selectivity.

Description

technical field [0001] The invention belongs to a catalyst for producing acetone by gas-phase catalytic ketonization of acetic acid, a preparation method and an application. Background technique [0002] Ketones are an important class of organic chemical products, widely used in synthetic dyes, medicines, paints, spices, pesticides and other fields. The direct gas-phase catalytic synthesis of ketones from carboxylic acids was first proposed in 1895. The reaction conditions for the synthesis of ketones by carboxylic acid gas-phase catalysis are mild, the raw materials are simple, and no reaction solvent is needed. In addition, industrial waste fatty acids and natural biomass can be effectively used. Therefore, in recent years received widespread attention. As a commonly used solvent and industrial intermediate, acetone has a huge market demand, but at present most of the acetone in the industry is produced by the co-production of phenol, and its market supply is restricted b...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J23/75B01J23/755C07C45/54C07C49/08
Inventor 李德宝孙波鲁怀乾肖勇贾丽涛侯博林彩虹陈从标林明桂秦泗彬
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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