Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Non-crystal hydrogenation catalyst for anthraquinone process of preparing hydrogen peroxide solution and its preparing method

A technology of hydrogen peroxide and catalyst, which is applied in the field of new catalyst for anthraquinone hydrogenation and its preparation, and can solve problems such as thickening of working fluid viscosity, high price of palladium catalyst, and high production cost of hydrogen peroxide

Inactive Publication Date: 2005-05-25
FUDAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-crystal hydrogenation catalyst for anthraquinone process of preparing hydrogen peroxide solution and its preparing method
  • Non-crystal hydrogenation catalyst for anthraquinone process of preparing hydrogen peroxide solution and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the preparation of amorphous Ni-M-B alloy catalyst

[0019] Na 2 MO 4 (5gM L -1 ) added to NiCl 2 Aqueous solution (0.42mol·L -1 ), after mixing evenly, place in an ice-water bath, slowly add KBH dropwise while stirring 4 Aqueous solution (2.0mol·L -1 ), if M is Cr, Mo, W, Ni-Cr-B, Ni-Mo-B, Ni-W-B catalysts are prepared respectively. The obtained black precipitate was separated by centrifugation, washed with deionized water until neutral, and then the water in the catalyst was replaced with absolute ethanol. Some characterization results of the catalysts are shown in Table 1.

Embodiment 2

[0020] Embodiment 2: the preparation of amorphous Ni-Cr-B alloy catalyst

[0021] Na 2 CrO 4 (5gM L -1 ) into NiCl 2 Aqueous solution (0.42mol·L -1 ), after mixing evenly, place in an ice-water bath, slowly add KBH dropwise while stirring 4 Aqueous solution (2.0mol·L-1 ), changing the added volume of sodium chromate can obtain catalysts with different chromium contents, which are respectively recorded as Ni-Cr-B-1, Ni-Cr-B-2, Ni-Cr-B-3, Ni-Cr-B- 4. The obtained black precipitate was separated by centrifugation, washed with deionized water until neutral, and then the water in the catalyst was replaced with absolute ethanol. Partial characterization results of the catalysts are shown in Table 2.

Embodiment 3

[0022] Embodiment 3: Anthraquinone hydrogenation activity test

[0023] Dissolve 3.5g of anthraquinone in 70mL of a solvent made of heavy aromatics and trioctyl phosphate in a volume ratio of 7:3, and put it into the reactor together with 0.5g of Ni-Cr-B-2 catalyst, and fill it with The hydrogen pressure was introduced to 3atm, the reaction temperature was controlled at 50±2°C, and the stirring rate was 1000 rpm. The results obtained are listed in figure 2 : The yield of hydrogen peroxide reaches 100% in 60 minutes, and when the yield of hydrogen peroxide reaches the maximum, the selectivity to carbonyl hydrogenation also reaches 100%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of chemical industry, and specifically 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. The catalyst is composed of nickel, boron and metal additive M, and the specific surface area is 10-200m 2 .g -1 , the active specific surface area is 0.1~50m 2 .g -1 . The preparation method of the catalyst includes adding metal additives in situ during the preparation of the nickel-boron alloy or post-modifying the nickel-boron alloy with corresponding salts. Compared with the traditional Raney Ni catalyst in the industry, this type of catalyst has higher anthraquinone hydrogenation activity and much higher selectivity in the process of preparing hydrogen peroxide by anthraquinone method.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and provides a novel catalyst 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 turn yellow, and feels f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755C01B15/023
Inventor 乔明华刘波范康年
Owner FUDAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com