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Method for preparing anthraquinone through anthracene oxidation

An anthraquinone and aluminum oxide technology, which is applied in the field of anthraquinone oxidation to prepare anthraquinone, can solve the problems of difficult treatment of acidic waste liquid, and the catalyst cannot be reused repeatedly, so as to improve the selectivity and the yield of the product anthraquinone, and can be reused. The effect of recycling and reusing catalytic activity

Active Publication Date: 2017-07-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The catalytic hydrogenation reduction method is a green process. Although the product yield is high, it has the disadvantages of a large amount of acidic waste liquid that is difficult to handle, and the catalyst cannot be reused.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Prepare the catalyst, weigh 19.8g of ferric nitrate, dissolve the ferric nitrate solution in 28ml of deionized water to obtain a total of 68ml of solution, take 30ml of ferric nitrate solution, 30.2ml of manganese nitrate solution with a mass fraction of 50%, and 38g of aluminum oxide The material was impregnated with equal volume, impregnated for 14 hours, dried at 90°C for 4 hours, and then calcined at 750°C for 3 hours to obtain the catalyst.

[0023] Step 2: Add 150ml of solvent toluene, 6g of reactant anthracene, and 0.3g of catalyst into a 250ml high-pressure reactor, with a rotation speed of 950r / min, a temperature of 60°C, and ventilation with an air flow rate of 200ml / min and a pressure of 0.40MPa After the reaction was finished, the liquid chromatography analysis showed that the conversion rate of anthracene was 15%, the selectivity of anthraquinone was 90%, and the yield of anthraquinone was 13.5%.

Embodiment 2

[0025] Same as Example 1, the reaction temperature of step 2 is controlled at 80°C, and the other steps remain unchanged. After the reaction starts, according to Example 1, liquid chromatography analysis is carried out: the conversion rate of anthracene is 25%, and the selectivity of anthraquinone is 25%. is 92%, the yield of anthraquinone is 23%,

Embodiment example 3

[0027] Same as the implementation case 1, the reaction temperature of step 2 is controlled to be 100°C, and the other steps are unchanged. After the reaction starts, according to the implementation case 1, liquid chromatography analysis is carried out: the conversion rate of anthracene is 55%, the selectivity of anthraquinone The yield of anthraquinone was 98%, and the yield of anthraquinone was 53.9%.

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Abstract

The invention discloses a method for preparing anthraquinone through anthracene oxidation. The method includes: using oxide of aluminum as a carrier and metal oxide as an active center of a catalyst to catalyze anthracene oxidation to prepare anthraquinone, and specifically includes: 1, preparing a metal oxide compound catalyst; 2, allowing reaction to prepare anthraquinone. The metal oxide compound catalyst used in the method belongs to environment-friendly solid catalysts, specific surface area and pore size of the metal oxide compound catalyst can be adjusted by controlling temperature to control reaction, and the catalyst is easy to separate after reaction for preparing anthraquinone through anthracene oxidation is finished. The process of preparing anthraquinone through anthracene oxidation is simple to operate, the metal oxide compound catalyst is high in activity, recyclable and free of generating waste, and the method is environment-friendly.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a method for preparing anthraquinone, in particular to a method for preparing anthraquinone by oxidation of anthracene. Background technique [0002] As an important chemical raw material, anthraquinone is widely used in various industrial dyes, papermaking, medicine and pesticides and other fields, which also leads to anthraquinone being very tight in the domestic and international markets. The improvement of its production process will increase the anthracene It is of great significance to increase the production of quinones and reduce the production cost of anthraquinones to promote the development of the entire chemical industry. [0003] At present, the methods of producing anthraquinone at home and abroad are mainly prepared by anthracene oxidation. The preparation process of anthracene oxidation method is simple and the production cost is relatively low, and it is easy to rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C46/08C07C50/18B01J23/889B01J37/02B01J37/08
CPCB01J23/002B01J23/8892B01J37/0201B01J37/088B01J2523/00C07C46/08C07C50/18B01J2523/31B01J2523/72B01J2523/842
Inventor 王伟建谢梅娟韦金广张海燕刘子杰晁会霞罗祥生石海信何坤欢
Owner CHINA PETROLEUM & CHEM CORP
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