Perovskite catalyst and its laser ablation preparation method and application
A catalyst and perovskite technology, applied in the field of synthesis and preparation of perovskite catalysts, can solve the problems of small specific surface area, low catalytic activity, poor thermal stability of perovskite catalysts, etc., and achieve the effect of improving performance and catalytic performance.
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Embodiment 1
[0028] Take by weighing 12.99g lanthanum nitrate (La(NO 3 ) 3 ·6H 2 O), 6.625g manganese acetate (C 4 h 6 MnO 4 4H 2 O) Dissolve in 600mL deionized water to form a solution with a total metal ion concentration of 0.1mol / L, then add 10.8g of glucose to the mixed solution, and stir until uniformly mixed. Then the mixture was evaporated to dryness (60°C) on a rotary evaporator until a honey-like wet gel was formed, and then the wet gel was transferred to a crucible and dried in an oven at 80°C (air atmosphere) for 12 hours to obtain a fluffy, brittle, Pale yellow dry gel;
[0029] The xerogel obtained above is fully impregnated in a platinum / palladium (Pt / Pd) mixed solution containing 1.3404g;
[0030] The temperature was raised to 400°C at 3°C / min in the air atmosphere of the muffle furnace and kept for 2 hours to completely decompose the nitrate in the precursor, and then the temperature was raised to 800°C for 3 hours at 10°C / min to prepare the perovskite catalyst.
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Embodiment 2
[0034] Take by weighing 12.99g lanthanum nitrate (La(NO 3 ) 3 ·6H 2 O), 5.880g manganese acetate (C 4 h 6 MnO 4 4H 2 O) Dissolve in 600mL deionized water to form a solution with a total metal ion concentration of 0.1mol / L, then add 10.8g of glucose to the mixed solution, and stir until uniformly mixed. Then the mixture was evaporated to dryness (60°C) on a rotary evaporator until a honey-like wet gel was formed, and then the wet gel was transferred to a crucible and dried in an oven at 80°C (air atmosphere) for 12 hours to obtain a fluffy, brittle, Pale yellow dry gel;
[0035] The xerogel obtained above is fully impregnated in a platinum / palladium (Pt / Pd) mixed solution containing 2.6808g;
[0036] The temperature was raised to 400°C at 3°C / min in the air atmosphere of the muffle furnace and kept for 2 hours to completely decompose the nitrate in the precursor, and then the temperature was raised to 800°C for 3 hours at 10°C / min to prepare the perovskite catalyst.
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Embodiment 3
[0039] Take by weighing 12.99g lanthanum nitrate (La(NO 3 ) 3 ·6H 2 O), 5.145g manganese acetate (C 4 h 6 MnO 4 4H 2 O) Dissolve in 600mL deionized water to form a solution with a total metal ion concentration of 0.1mol / L, then add 10.8g of glucose to the mixed solution, and stir until uniformly mixed. Then the mixture was evaporated to dryness (60°C) on a rotary evaporator until a honey-like wet gel was formed, and then the wet gel was transferred to a crucible and dried in an oven at 80°C (air atmosphere) for 12 hours to obtain a fluffy, brittle, Pale yellow dry gel;
[0040] The xerogel obtained above is fully impregnated in a platinum / palladium (Pt / Pd) mixed solution containing 4.0212g;
[0041] The temperature was raised to 400°C at 3°C / min in the air atmosphere of the muffle furnace and kept for 2 hours to completely decompose the nitrate in the precursor, and then the temperature was raised to 800°C for 3 hours at 10°C / min to prepare the perovskite catalyst.
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