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Molecular sieve catalyst and application on using phenol and peroxid compounding hydroquinone thereof

A technology for hydrogen peroxide and catalysis of phenol, which is applied in the direction of molecular sieve catalyst, oxidation reaction preparation, physical/chemical process catalyst, etc., can solve the problems of high price, backward production process of hydroquinone, and low production capacity, and achieve the preparation method and The effect of simple process, easy large-scale preparation, and easy separation and recovery

Inactive Publication Date: 2008-06-25
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 production cost of the catalyst TS-1 molecular sieve used in the Enichem method is relatively high, the price is expensive, and the catalyst needs to be used many times, and the activity of the fine-grained TS-1 molecular sieve is better in actual use, which brings difficulties to the recovery of the catalyst
[0008] The production process of hydroquinone in our country is very backward, and the traditional aniline oxidation method is still used in the production of hydroquinone, which has poor product quality, low production capacity, and serious wastes.
Catechol is hydrolyzed by o-chlorophenol, and has not yet formed a large-scale production

Method used

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  • Molecular sieve catalyst and application on using phenol and peroxid compounding hydroquinone thereof
  • Molecular sieve catalyst and application on using phenol and peroxid compounding hydroquinone thereof
  • Molecular sieve catalyst and application on using phenol and peroxid compounding hydroquinone thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the synthesis of FSM-16 molecular sieve

[0030] Weigh 10.0 g of layered sodium silicate and add it to 100 mL of water, adjust the pH to 7-8 with 2 mol / L HCl, stir at 343 K for 3 h, and then filter. The filter cake was transferred to 200 mL of a 0.1 mol / L aqueous solution of cetyltrimethylammonium bromide, at which point the pH was 10. After stirring for 3 h, adjust the pH to 7-8 with 2 mol / L HCl and then stir for 3 h. Then filter, dry at 393K, and calcined at 973K for 5 hours to remove organic matter.

Embodiment 2

[0031] Embodiment 2: the synthesis of Fe-FSM-16 catalyst

[0032] Weigh 10.0 g of layered sodium silicate and add it to 100 mL of an aqueous solution containing 0.1 mol / L iron salt, adjust the pH to between 7 and 8 with 2 mol / L HCl, stir at 343 K for 3 h, and then filter. The filter cake was transferred to 200 mL of a 0.1 mol / L aqueous solution of cetyltrimethylammonium bromide, at which point the pH was 10. After stirring for 3 h, adjust the pH to 7-8 with 2 mol / L HCl and then stir for 3 h. Then filter, dry at 393K, and calcined at 973K for 5 hours to remove organic matter.

Embodiment 3

[0033] Embodiment 3: the synthesis of Cu-FSM-16 catalyst

[0034] Under the exact same conditions as in Example 2, the iron salt was changed to copper salt.

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PUM

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Abstract

The invention relates to a metal modified FSM-16 zeolite catalyst and an application thereof in the reaction of phenol and hydrogen peroxide synthesizing hydroquinone. The metal employed is one or more than one of ferrum, copper, manganese, chromium, tungsten, molybdenum, cobalt, vanadium and titanium. A preparation method of the invention is: layer sodium silicate is added into water solution containing metal salt, in which acid is then added to interpose pH value, the mixing solution is stirred for a period of time before being filtered. Filter mass is transferred into water solution containing template agent. After being stirred for a period of time, the acid is added into the water solution to interpose pH value before being stirred for a period of time, and then the catalyst is obtained through filtering, drying and calcined the water solution. The preparation method of the catalyst is simple and has low cost. In the reaction of synthesizing the hydroquinone through catalyzing the phenol and the hydrogen peroxide, 27.8 percent of conversion rate of the phenol and 96.4 percent of total selectivity of diphenol can be obtained from catalyst Fe-FSM-16, thereby the results of the invention can be compared with TS-1 zeolite.

Description

technical field [0001] The invention relates to a catalyst, in particular to a FSM-16 molecular sieve and a metal-modified FSM-16 molecular sieve catalyst. [0002] The present invention also relates to a preparation method of the above-mentioned catalyst [0003] The invention also relates to the application of the catalyst in the reaction of phenol and hydrogen peroxide to synthesize hydroquinone. Background technique [0004] Catechol and hydroquinone are important fine chemical products with a wide range of applications. Catechol can be used in industries such as medicine, pesticide, fragrance, photography, resin and paint, etc. It is the raw material for the production of fragrances such as vanillin, ethyl vanillin and piperonal, or carbofuran, propoxur, diethofencarb, etc. The intermediate of carbamate pesticides is not only the precursor of polymerization inhibitor and antioxidant, but also can be used to make cough suppressant, eugenol, berberine and isoproterenol,...

Claims

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Application Information

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IPC IPC(8): B01J29/72B01J29/78C07C39/08C07C29/48
CPCY02P20/52
Inventor 徐杰高肖汉苗红张伟孙志强马红陈晨
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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