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Preparation method of meso-porous alumina and catalytic synthesis of alpha-tetralone

A mesoporous alumina and mesoporous technology, which is applied in the field of chemical engineering to achieve mild reaction conditions, easy recovery and good selectivity.

Inactive Publication Date: 2009-01-07
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, no one has used mesoporous materials to catalyze the oxidation of tetralone to synthesize α-tetralone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Measure 5 milliliters of ammonia water and 5 milliliters of rubber emulsion, add 0.03 moles of NaAlO 2 10 ml of water, stirred for 0.1 hour, and then dissolved with 0.008 mole of Co(NO 3 ) 2 and 0.01 mole Al(NO 3 ) 315 ml of aqueous solution was added dropwise to the aforementioned solution under rapid stirring, stirred for 0.4 hours, and after standing still for 0.5 hours, put it into a crystallization bottle and crystallized for 10 hours, suction filtered, washed, dried, and placed in a muffle furnace in Sinter at 300°C for 2h. Obtain light blue cobalt-doped mesoporous aluminum oxide material Co / MAl 2 o 3 (1:5).

Embodiment 2

[0027] Measure 5 milliliters of ammonia water and 5 milliliters of rubber emulsion, add 0.03 moles of NaAlO 2 30 ml of water, stirred for 2 hours, then dissolved with 0.0008 moles of CoSO 4 and 0.01 mol Al 2 (SO 4 ) 3 45 ml of aqueous solution was added dropwise to the aforementioned solution under rapid stirring, stirred for 2 hours, left to stand for 24 hours, put into a crystallization bottle and crystallized for 72 hours, suction filtered, washed, dried, and placed in a muffle furnace Sinter at 700°C for 24h. Obtain light blue cobalt-doped mesoporous aluminum oxide material Co / MAl 2 o 3 (1:50).

Embodiment 3

[0029] Measure 5 milliliters of ethylenediamine and 5 milliliters of rubber emulsion, add 0.03 moles of NaAlO 2 30 ml of water, stirred for 1 hour, and then dissolved with 0.0016 moles of CoCl 2 and 0.01 M AlCl 3 20 ml of aqueous solution was added dropwise to the aforementioned solution under rapid stirring, stirred for 1 hour, and after standing for 12 hours, put it into a crystallization bottle and crystallized for 24 hours, suction filtered, washed, dried, and placed in a muffle furnace Sinter at 500°C for 4h. Obtain light blue cobalt-doped mesoporous aluminum oxide material Co / MAl 2 o 3 (1:25).

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PUM

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Abstract

The invention provides a method for preparing cobalt-doped mesoporous alumina by taking a rubber latex as a biological template, and a method for catalytically oxidizing tetralin into tetralone under liquid phase. The invention relates to the method for preparing the cobalt-doped mesoporous alumina by taking the rubber latex as the template, and the method for synthesizing tetralone. The invention aims to develop a method which is used for preparing the cobalt-doped mesoporous alumina by taking the rubber latex as the biological template and a high-conversion and high-selectivity method which is used for catalytically oxidizing tetralin into tetralone under the liquid phase, and comprises the following steps: a mesoporous material is taken as a heterogeneous catalyst, and tetralin is catalytically oxidized into tetralone under the low temperature liquid phase. The experimental results show that the conversion rate of the tetralin reaches 80.3 percent and the selectivity of tetralone reaches 74.5 percent.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and in particular relates to cobalt-doped mesoporous aluminum oxide prepared by using rubber emulsion as a template, and the use of the product in catalytically synthesizing tetralone. Background technique [0002] Various forms of alumina play an important role in the development of catalysis. Nano-mesoporous alumina (Al 2 o 3 ) Molecular sieves with non-porous Al 2 o 3 The different excellent properties of nanomaterials, it not only has the unique surface effect, volume effect, quantum size effect and macroscopic quantum tunneling effect of nanomaterials, but also has a higher specific surface area, larger pore size (compared to microporous materials) and The long-range ordered pore arrangement has broad application prospects in the field of catalysis. In recent years, the synthesis of mesoporous materials mainly adopts methods such as hydrothermal synthesis, room temperature ...

Claims

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Application Information

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IPC IPC(8): B01J23/75C07C49/637C07C45/28
Inventor 王家强马永平段莉娜王剑飞
Owner YUNNAN UNIV
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