Metal-loaded magnetic carbon material catalyst and method for catalyzing dechlorination of chlorinated phenol through metal-loaded magnetic carbon material catalyst

A technology for supporting metals and chlorinated phenols, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of hindering the adsorption and activation of organic chlorides and catalyst poisoning Inactivation, increased secondary pollution and other issues, to avoid high-speed centrifugation and complicated post-processing steps, reduce production costs, and simplify the preparation process

Inactive Publication Date: 2014-09-10
CHINA WEST NORMAL UNIVERSITY
View PDF3 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the high concentration of HCl produced in the existing catalytic chlorinated phenol hydrodechlorination process will be strongly adsorbed on the active center of the catalyst, inhibiting the adsorption and activation of the reaction substrate and hydrogen, resulting in catalyst poisoning and deactivation
At present, most of the research systems need to add a large amount of alkali such as NaOH, triethylamine, etc. as additives to suppress catalyst poisoning, so there are the following

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of the magnetic carbon material supported metal catalyst of the present invention comprises the following steps:

[0035] a. Add ferrous salt into deionized water, add carbon material after dissolving, and ultrasonically disperse evenly to obtain solution A;

[0036] Wherein, the carbon material activated carbon, carbon nanotube or graphene; the mass ratio of the carbon material to the iron in the ferrous salt is 1-5:2-4;

[0037] b. Add the loaded metal substance into deionized water, then add sodium hydroxide, and ultrasonically disperse evenly to obtain mixture B;

[0038] Wherein, the mass ratio of the metal element in the supported metal substance to the carbon material in step a is 0.05-0.18:1-5, and the mass ratio of the supported metal substance to the sodium hydroxide is 1-5:40;

[0039] Described loaded metal substance is a kind of in chloroplatinic acid, chloropalladite, palladium chloride, platinum chloride, rhodium chloride, palladiu...

Embodiment 1

[0060] Example 1 Preparation of Magnetic Carbon Material Supported Metal Catalyst and Method for Using This Catalyst to Catalyze 4-Chlorophenol Dechlorination

[0061] 0.8 g of ferrous sulfate was added to 15 mL of deionized water to fully dissolve it, and then 0.1 g of graphene (A) was added. Ultrasonic treatment at 25°C for 30min to obtain solution A;

[0062] Add 30 mg of sodium chloropalladite into 7 mL of deionized water, after fully dissolving, add 0.4 g of sodium hydroxide, and ultrasonically treat it at 25°C for 30 min to obtain mixture B;

[0063] Add mixture B to solution A, stir at room temperature for 8 hours, use a magnet to suck out the catalyst, wash the catalyst with water 3 times, then wash the catalyst with ethanol 3 times, and vacuum dry at 60 °C for 12 h to obtain a magnetic graphene-supported palladium catalyst;

[0064] 5.0 mg of catalyst was added to 5 mL of an aqueous solution with a concentration of 2.5 g / L of 4-chlorophenol, hydrogen was introduced, ...

Embodiment 2

[0066] Example 2 Preparation of Magnetic Carbon Material Supported Metal Catalyst and Method for Catalyzing 4-Chlorophenol Dechlorination Using This Catalyst

[0067] Add 0.8 g of ferrous sulfate into 15 mL of deionized water to fully dissolve it, then add 0.1 g of carbon nanotubes, and ultrasonically treat at 25°C for 30 min to obtain solution A;

[0068] Add 30 mg of sodium chloropalladite into 7 mL of deionized water, after fully dissolving, add 0.4 g of sodium hydroxide, and ultrasonically treat it at 25°C for 30 min to obtain mixture B;

[0069] The mixture B was added to the solution A, stirred at room temperature for 8 hours, the catalyst was sucked out by a magnet, the catalyst was washed with water for 3 times, then the catalyst was washed with ethanol for 3 times, and vacuum dried at 60 °C for 12 hours to obtain a magnetic carbon nanotube-supported metal palladium catalyst;

[0070] 5.0 mg of catalyst was added to 5 mL of a solution with a concentration of 2.5 g / L of...

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

No PUM Login to view more

Abstract

The invention relates to a metal-loaded magnetic carbon material catalyst and a method for catalyzing dechlorination of chlorinated phenol through the metal-loaded magnetic carbon material catalyst, and belongs to the field of organic synthesis and catalytic reaction. The metal-loaded magnetic carbon material catalyst and the method for catalyzing dechlorination of the chlorinated phenol through the catalyst are provided. The metal-loaded magnetic carbon material catalyst is a compound obtained by loading Fe3O4 and active metal elements on a carbon material, wherein the carbon material is activated carbon or carbon nano tubes or graphene, and the active metal elements are one or two of platinum, palladium and rhodium. The preparation steps of the catalyst are simple, reduction is carried out simultaneously in the preparation process of the catalyst, and the reduction step is omitted. The catalyst has terrific hydrodechlorination performance on the chlorinated phenol and is used for dechlorination of the chlorinated phenol, reaction conditions are milder, no inorganic or organic additive is added to a reaction system, and the catalyst can be recycled.

Description

technical field [0001] The invention relates to a magnetic carbon material supported metal catalyst and a method for catalyzing the dechlorination of chlorinated phenol, belonging to the technical field of water treatment and water pollution treatment. Background technique [0002] Chlorinated phenolic organic compounds are a very important class of chemical raw materials and are widely used in the production of dyes, preservatives, herbicides and pesticides. Such compounds have strong chemical stability and are difficult to biodegrade in the environment, and their extensive use in industrial and agricultural production has caused serious pollution to the environment. Therefore, it is of great practical significance to develop a new treatment method for organically polluted wastewater and study the degradation mechanism to protect the ecological environment and maintain the healthy development of the national economy and society. [0003] Catalytic hydrodechlorination techn...

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
IPC IPC(8): B01J23/89A62D3/34A62D101/28
Inventor 樊光银
Owner CHINA WEST NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap