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
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[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...
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