Efficient catalyst for reaction of ethanol and acetaldehyde to synthesize 1,3-butadiene, and preparation method thereof

A catalyst, butadiene technology, applied in the direction of carbon compound catalyst, catalyst, molecular sieve catalyst, etc., can solve the problems of low efficiency and high production cost, and achieve the effect of simple preparation process, simple composition and excellent activity

Inactive Publication Date: 2019-12-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst proposed by the present invention overcomes the defects of low efficiency, rapid deactivation and high production cost of existin

Method used

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  • Efficient catalyst for reaction of ethanol and acetaldehyde to synthesize 1,3-butadiene, and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The preparation of embodiment 1 catalyst

[0057]Dissolve 0.075g of zirconyl nitrate in 20mL of absolute ethanol, add 1.96g of coarse-porous silica gel powder, stir at room temperature for 12h, then continue stirring at 60°C until the solution is evaporated to dryness, and the obtained powder is calcined in an air atmosphere at 650°C for 6h. Obtain zirconia / silica catalyst, denoted as sample 1 # .

Embodiment 2

[0058] The preparation of embodiment 2 catalyst

[0059] Dissolve 0.375g of zirconyl nitrate in 20mL of absolute ethanol, add 1.8g of coarse-porous silica gel powder, stir at room temperature for 12h, then continue stirring at 60°C until the solution is evaporated to dryness, and the obtained powder is calcined in an air atmosphere at 650°C for 6h. Obtain zirconia / silica catalyst, denoted as sample 2 # .

Embodiment 3

[0060] The preparation of embodiment 3 catalyst

[0061] Dissolve 0.075g of zirconyl nitrate in 20mL of deionized water, add 1.96g of coarse-porous silica gel powder, stir at room temperature for 12h, then continue stirring at 60°C until the solution evaporates to dryness, and calcinate the obtained powder in an air atmosphere at 650°C for 6h to obtain Zirconia / silica catalyst, denoted as sample 3 # .

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Abstract

The invention discloses a catalyst for a reaction of ethanol and acetaldehyde to synthesize 1,3-butadiene. The catalyst comprises a silica-containing carrier and a zirconium dioxide-containing activecomponent loaded on the carrier; and the active component is impregnated and loaded on the carrier through a precursor of the active component. The catalyst has excellent activity, selectivity and stability when used in the reaction of ethanol and acetaldehyde to synthesize 1,3-butadiene. The catalyst provided by the invention overcomes the defects of low efficiency, rapid inactivation and high production cost of existing catalysts, and has the advantages of simple preparation process, cheap and easily available raw materials, and realization of large-scale industrial production.

Description

technical field [0001] The application relates to a high-efficiency catalyst and a preparation method thereof, which can be used to catalyze the reaction of ethanol and acetaldehyde to synthesize 1,3-butadiene, belonging to the field of catalytic synthesis. Background technique [0002] 1,3-Butadiene is an important organic chemical raw material with a very wide range of uses, and its production mainly relies on petroleum refining processes. With the depletion of petroleum resources, it is of great significance to find other raw material resources or develop new production routes. [0003] Ethanol can be converted into 1,3-butadiene under the action of a suitable catalyst. In recent years, the production of ethanol produced through biological fermentation process has gradually increased. In addition, the successful research and development of coal-to-ethanol technology will further increase the production capacity of ethanol. Therefore, it is of more practical significance...

Claims

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Application Information

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IPC IPC(8): B01J21/08B01J29/89B01J23/06B01J23/72B01J21/14C07C11/167C07C1/20
CPCB01J21/08B01J21/14B01J23/002B01J23/06B01J23/72B01J29/89B01J2523/00C07C1/2076C07C2521/08C07C2521/14C07C2523/06C07C2523/72C07C2529/89B01J2523/27B01J2523/41B01J2523/48B01J2523/17B01J2523/22C07C11/167
Inventor 金长子黄声骏张大治秦立民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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