Anthraquinone hydrogenation catalyzer of anthraquinone method oxydol preparation process and its preparation method

A technology of hydrogen peroxide and anthraquinone method, applied in the chemical industry, can solve the problems of high production cost of hydrogen peroxide, hydrogen consumption, high price of palladium catalyst, etc.

Inactive Publication Date: 2004-11-10
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found in both research and practical use that when palladium is used as a catalyst, the hydrogenation of the benzene ring on one side proceeds at the beginning of the reaction, although the generation of a small amount of tetrahydroanthraquinone has no effect on the yield of hydrogen peroxide, and it is still It is possible to increase the reaction rate, but as the reaction proceeds, more and more tetrahydroanthraquinones accumulate, which thickens the viscosity of the working fluid, which is unfavorable for operation and causes unnecessary consumption of hydrogen
In addition, the high price of the palladium catalyst also makes the production cost of hydrogen peroxide produced by this method higher

Method used

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  • Anthraquinone hydrogenation catalyzer of anthraquinone method oxydol preparation process and its preparation method
  • Anthraquinone hydrogenation catalyzer of anthraquinone method oxydol preparation process and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Supported amorphous Ni-B / SiO by reducing agent impregnation method 2 Preparation of Alloy Catalyst

[0022] Take 1g SiO 2 Carrier (40-60 mesh), use 3M KBH 4 Immerse in the solution for 15 minutes, pour out the impregnation solution, and then add a certain volume of 0.42M NiCl at one time 2 solution, and then decant the KBH 4 The impregnating solution is dripped back, and the reaction is completed when no bubbles are generated. The obtained catalyst was first washed with distilled water to neutrality, and then washed with ethanol three times to replace the water. The catalyst was finally stored in ethanol for characterization and activity testing. Some characterization results of the catalysts are shown in Table 1.

Embodiment 2

[0023] Example 2: Common impregnation method supported amorphous N-B / SiO 2 Preparation of Alloy Catalyst

[0024] 1.0g SiO 2 (40-60 mesh, treated with nitric acid) 3.4mL 0.50M NiCl 2 ·6H 2 Immerse in O aqueous solution for 10 min, evaporate to dryness in a 70°C water bath with stirring, then bake in an oven at 120°C overnight, and then bake at 200°C for 2.0h. 6.8 mL of 1M KBH in an ice-water bath 4 The aqueous solution was reduced, and after the reaction was completed, it was washed with distilled water to neutrality, and then washed three times with absolute ethanol for later use. Partial characterization results of the catalysts are shown in Table 2.

Embodiment 3

[0025] Embodiment 3: According to the various operating conditions and steps of Embodiment 1, only the carrier is changed, and the results are listed in Table 3.

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Abstract

The invention discloses a novel catalyst and process of preparation for anthraquinone hydrogenation in hydrogen dioxide solution preparation, wherein the catalyst comprises nickel, boron, metallic additive M and carrying agent S, the specific surface is 200-1200 m2g-1, the active specific surface is 0.1-50 m2g-1. The catalyst preparing process comprises the steps of charging surface activator in the nickel-boron alloy preparation, producing mixture of mesopore or micropore molecular sieve and nickel-boron alloy, the conventional immersion or reducing agent immersion method can be employed to load the nickel-boron alloy onto the common carrying agent or mesopore and microporous molecular sieve.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel catalyst used for hydrogenation of anthraquinone in the process of preparing hydrogen peroxide by an anthraquinone method and a preparation method thereof. Background technique [0002] Hydrogen peroxide is a very important chemical product with a wide range of applications. It has the function of sterilization and disinfection, and the 3% hydrogen peroxide solution can be used for the disinfection treatment of medical equipment. The final product of its reaction is mainly water, which will not pollute the environment. Therefore, in processes such as wastewater treatment and pulp bleaching, the use of hydrogen peroxide can reduce secondary pollution such as a large amount of trihalomethanes caused by the use of chlorine gas as a disinfectant. things. Because hydrogen peroxide has little damage to fiber strength, the treated fabric is not easy to tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/76B01J29/00C01B15/023
Inventor 陈雪莹乔明华范康年贺鹤勇
Owner FUDAN UNIV
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