High-entropy perovskite monolithic catalyst as well as preparation method and application thereof
A monolithic catalyst and perovskite technology, applied in chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of large metal dissolution value, limited component control, and secondary pollution of the environment and other problems, to achieve the effect of low cost, uniform distribution, and not easy to fall off
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Embodiment 1
[0032] La(Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 co 0.2 )O 3 The preparation method of @PAC monolithic catalyst specifically comprises the following steps:
[0033] Dissolve 1mmol of citric acid in 5mL of absolute ethanol, stir until it is completely dissolved, then weigh 1mmol of lanthanum nitrate, 0.2mmol of cobalt nitrate, manganese nitrate, iron nitrate, nickel nitrate, and copper nitrate into the above solution respectively, After stirring until clarified, the stirring was continued for 0.5 h to obtain a precursor solution. Pipette 5 mL of the precursor solution and drop-coat it on the base material. After standing at room temperature for 0.5 h, dry it in a blast drying oven at 80 °C for 2 h, and then place it in a muffle furnace for calcination at 600 °C for 3 h to obtain the active group. High-entropy perovskite monolithic catalyst La(Mn 0.2 Fe 0.2 Ni 0.2 Cu 0.2 co 0.2 )O 3 @PAC.
[0034] For the La(Mn prepared in Example 1 0.2 Fe 0.2 Ni 0.2 Cu 0.2 co 0.2 )O 3 T...
Embodiment 2
[0036] La(Mn 0.2 Fe 0.2 Ni 0.2 Ti 0.2 co 0.2 )O 3 The preparation method of @PAC monolithic catalyst specifically comprises the following steps:
[0037] Dissolve 1.6mmol of citric acid in 5mL of absolute ethanol, stir until it is completely dissolved, then weigh 0.8mmol of lanthanum nitrate, 0.16mmol of cobalt nitrate, manganese nitrate, iron nitrate, and nickel nitrate into the above solution respectively, and stir After clarification, 0.16 mmol of tetra-n-butyl titanate was added dropwise and stirring was continued until the solution became clear, and then stirring was continued for 1 h to obtain a precursor solution. Pipette 5 mL of the precursor solution and drop-coat it on the base material, let it stand at room temperature for 0.5 h, dry it in a blast drying oven at 80 °C for 2 h, then place it in a muffle furnace for calcination at 700 °C for 5 h, and the loading capacity is obtained as 0.48% high-entropy perovskite monolithic catalyst La(Mn 0.2 Fe 0.2 Ni 0.2 ...
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