Mo-based monatomic high-entropy perovskite oxide desulfurization catalyst and preparation method thereof
A perovskite oxide, desulfurization catalyst technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, refining with oxygen-containing compounds, etc., can solve harsh reaction conditions and rising production costs of enterprises , to deal with problems of high cost, to achieve high activity, to achieve recycling, and to promote the effect of reaction efficiency
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Embodiment 1
[0026] Disperse 0.30 g of graphene (GO) in 150 mL of ethylene glycol solution, and stir thoroughly to prepare A solution. Dissolve 0.05mol La, Cu, Co, Fe, Mn, Ni nitrate into 50mL ethylene glycol solution to prepare B solution. Then, solution A was added dropwise to solution B, stirred at room temperature, refluxed at 70°C for 4h, refluxed at 170°C for 4h, centrifuged at 10,000rpm, dried at 110°C, and calcined at 900°C for 2h to prepare a high-entropy perovskite oxide carrier HEPO. Introduce 1.0 g of the above-prepared HEPO into 50 mL of aqueous solution containing 0.50 g of ammonium molybdate, stir thoroughly, heat at 90°C for 4 days, and then mix with 0.20 mol / L NH 4 The Mo-based single-atom high-entropy perovskite oxide (Mo / HEPO) was prepared by ion-exchanging Cl solution, drying at 110°C, and calcining at 550°C for 4 h.
[0027] 20mg Mo / HEPO was mixed with 20mL DBT containing 500ppm, and air was introduced (200mL / min), stirred in an oil bath at 800rpm, and reacted at 120...
Embodiment 2
[0029] Disperse 0.30 g of graphene (GO) in 150 mL of ethylene glycol solution, and stir thoroughly to prepare A solution. Dissolve 0.05mol La, Cu, Co, Fe, Mn, Ni nitrate into 50mL ethylene glycol solution to prepare B solution. Then, solution A was added dropwise to solution B, stirred at room temperature, refluxed at 70°C for 4h, refluxed at 170°C for 4h, centrifuged at 10,000rpm, dried at 110°C, and calcined at 900°C for 2h to prepare a high-entropy perovskite oxide carrier HEPO. Introduce 1.0 g of the above-prepared HEPO into 50 mL of aqueous solution containing 0.50 g of ammonium molybdate, stir thoroughly, heat at 90°C for 4 days, and then mix with 0.20 mol / L NH 4 The Mo-based single-atom high-entropy perovskite oxide (Mo / HEPO) was prepared by ion-exchanging Cl solution, drying at 110°C, and calcining at 550°C for 4 h.
[0030] Mix 20mg Mo / HEPO with 20mL DBT containing 500ppm, and pass air (200mL / min), stir in an oil bath at 400rpm, and react at 120°C for 90min. After ...
Embodiment 3
[0032] Disperse 0.30 g of graphene (GO) in 150 mL of ethylene glycol solution, and stir thoroughly to prepare A solution. Dissolve 0.05mol La, Cu, Co, Fe, Mn, Ni nitrate into 50mL ethylene glycol solution to prepare B solution. Then add solution A to solution B dropwise, stir at room temperature, reflux at 70°C for 4h, reflux at 170°C for 4h, centrifuge at 10,000rpm, dry at 110°C, and roast at 900°C for 2h to prepare a high-entropy perovskite oxide carrier HEPO. Introduce 1.0 g of the above-prepared HEPO into 50 mL of aqueous solution containing 0.50 g of ammonium molybdate, stir thoroughly, heat at 90°C for 4 days, and then mix with 0.20 mol / L NH 4 The Mo-based single-atom high-entropy perovskite oxide (Mo / HEPO) was prepared by ion-exchanging Cl solution, drying at 110°C, and calcining at 550°C for 4 h.
[0033] 20mg Mo / HEPO was mixed with 20mL DBT containing 500ppm, and air was introduced (200mL / min), stirred in an oil bath at 200rpm, and reacted at 120°C for 90min. After...
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