Preparation method and applications of nitrogen-doped copper-palladium bimetal nanometer catalytic material
A technology of bimetallic nano and catalytic materials, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor stability and poor dispersion, achieve high stability, improve dispersion, Good dispersion and stability effect
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[0026] Example 1
[0027] 1. The preparation of nitrogen-doped copper-palladium bimetallic nano-catalytic material, the specific steps are as follows:
[0028] (1) Put copper nitrate (1.5mol) and palladium acetylacetonate (0.38mol) in 1.5mL N,N-dimethylformamide (DMF), mix them uniformly to form a uniform dispersion system, in the uniform dispersion system Add organic ligand triethylenediamine (nitrogen source, 4.58mol) and terephthalic acid (4.35mol) for hydrothermal reaction, mix and stir for about 30min, move to hydrothermal reactor and react at 150℃ for 12h, prepare N-Cu-PdMOFs were obtained.
[0029] (2) The N-Cu-PdMOFs and OMC (150 mg) prepared in step (1) were added to DMF and sonicated for about 30 minutes, and then the mixed solution was transferred to a hydrothermal reactor and reacted at 180°C for 16 hours; the resulting product was washed, After centrifugation, place it at 140℃ for vacuum drying for 6h;
[0030] (3) After the product obtained in step (2) is pyrolyzed at ...
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[0040] Example 2
[0041] The preparation of nitrogen-doped copper-palladium bimetallic nano-catalytic material and the method of catalytic reduction of nitrate are the same as in Example 1, except that the mass ratio of copper-palladium is controlled when preparing nitrogen-doped spatially confined N-Cu-Pd@OMC It is 2:1, the high-temperature pyrolysis time is 1h under nitrogen atmosphere, after 24h of electrocatalytic reaction, the nitrogen selectivity is 84%, and the nitrate removal capacity is 493.6mgN / g catalyst.
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[0042] Example 3
[0043] The preparation of the nitrogen-doped copper-palladium bimetallic nano-catalytic material and the method of catalytic reduction of nitrate are as in Example 1, except that the calcining temperature adopted when preparing the nitrogen-doped spatially confined N-Cu-Pd@OMC catalyst is At 800℃, the nitrate concentration of this system is 200ml, the coating amount of nano-catalytic material is 5mg, the area of the nickel mesh is 2cm×2.5cm, after 30h of electrocatalytic reaction, the nitrogen selectivity is 86%, and the nitrate removal capacity It is 1273.6mgN / g catalyst.
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