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Process for preparing butyl butyrate

A butyl butyrate and catalyst technology, which is applied in the field of butyl butyrate preparation, can solve the problems of low catalyst activity and selectivity, and achieve the effects of reduced equipment investment, simplified process flow, and increased selectivity

Inactive Publication Date: 2004-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reaction pressure is lowered, the catalyst activity and selectivity will be lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0025] Catalyst preparation example:

[0026] With 96.6 grams of copper nitrate (chemically pure, Beijing Chemical Plant), 300 grams of zinc nitrate (chemically pure, Beijing Chemical Plant), 29.7 grams of chromic anhydride (chemically pure, Beijing Chemical Plant), 520.9 grams of zirconium nitrate (chemically pure, Beijing Chemical Plant) Plant) was dissolved in 760 ml of deionized water, then mixed with ammonia water under stirring to form a precipitate, and the pH was controlled to 6±1, the generated precipitate was filtered, washed and dried at 200±10°C for 4 hours, and then dried at 500±60°C Calcined for 10 hours to make catalyst matrix B: Cu 0.4 ZnCr 0.3 Zr 1.95 o 5.8 .

Embodiment 3

[0028] Catalyst preparation example:

[0029] With 52.2 grams of copper nitrate (chemically pure, Beijing Chemical Plant), 13 grams of zinc nitrate (chemically pure, Beijing Chemical Plant), 28.9 grams of chromic anhydride (chemically pure, Beijing Chemical Plant), 6.9 grams of titanium dioxide (chemically pure, Beijing Chemical Plant) ) was dispersed in 280 milliliters of deionized water, and then mixed with ammonia water with a concentration of 23-25% by weight under stirring to generate a precipitate, and the pH was controlled to 7 ± 1, and the generated precipitate was filtered, washed and dried at 120°C for 6 hours, and then dried at 500 Calcined at ±60°C for 4 hours to make catalyst matrix C: Cu 5 ZnCr 6.7 Ti 2 o 20.1 .

Embodiment 4

[0031] Catalyst preparation example:

[0032] With 52.2 grams of copper nitrate (chemically pure, Beijing Chemical Plant), 20.3 grams of zinc nitrate (chemically pure, Beijing Chemical Plant), 19.6 grams of chromic anhydride (chemically pure, Beijing Chemical Plant), 4.3 grams of titanium dioxide (chemically pure, Beijing Chemical Plant) ) was dispersed in 300 milliliters of deionized water, then mixed with ammonia water with a concentration of 23-25% by weight under stirring to generate a precipitate, and the pH was controlled to 5 ± 1, and the generated precipitate was filtered, washed and dried at 120°C for 6 hours, and then dried at 500 Calcined at ±60°C for 4 hours to make catalyst precursor D: Cu 3.3 ZnCr 3 Ti 0.83 o 10.5 .

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PUM

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Abstract

A process of preparing butyl butyrate comprises: gasifying butanol in the case of hydrogen, at the temperature of 200degree C-300 degree C and the pressure of 0.01-1Mpa, passing a reactor, contactingwith a catalyst, the formula thereof is CuaZnCrbMcOx wherein aú¢0.1-10ú¼bú¢0.1-10ú¼cú¢0.1-5, M selecting from elements of IVB Group in the Periodic Table, X is the number of oxygen atom satisfying chemical valence of other elements, then separating and collecting butyl butyrate. The process is simple, no waste acids and no wastewater produce which wouldn't pollute environment.

Description

technical field [0001] The present invention relates to the preparation method of butyl butyrate Background technique [0002] Butyl butyrate is a fine chemical product that can be used in organic synthesis, as a solvent and fragrance. Butyl butyrate is used as a solvent in nitrocellulose, shellac, coumarone resins and paints. As a spice, it is mainly used to reconcile flavors such as apples and pineapples. [0003] The main method for industrially synthesizing butyl butyrate is to react n-butyric acid and n-butanol in H 2 SO 4 Catalyzed esterification. [0004] <chemistry num="001"> <chem file="02130779_cml001.xml" / > < / chemistry> [0005] The raw material n-butyric acid must be oxidized and synthesized by n-butyraldehyde or n-butanol. Therefore, the cost of the above-mentioned process route is high. In addition, the catalyst sulfuric acid causes serious corrosion to the device, and esterification generates a large amount of useless waste water and...

Claims

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Application Information

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IPC IPC(8): C07C67/08C07C67/40C07C69/24
Inventor 王海京高国强
Owner CHINA PETROLEUM & CHEM CORP
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