Sulfate radical modified iridium-based methane combustion catalyst as well as preparation and application thereof
A combustion catalyst, iridium-based methane technology, applied in the direction of physical/chemical process catalysts, combustion methods, combustion types, etc., can solve the problems of unexamined catalyst water resistance, poor activity, and reduced catalytic activity, so that the synthesis process is simple and feasible control, good water resistance, good reproducibility
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Embodiment 1
[0024] Weigh ZrOCl 2 ∙8H 2 O and (NH 4 ) 2 SO 4 (10:1 by molar ratio) was dissolved in 140 mL deionized water and stirred for 20 min to obtain a mixed solution. Transfer the mixed solution into a hydrothermal reaction kettle with a volume of 200 mL, place it in a forced air drying oven, raise the temperature to 100 °C at a rate of 5 °C / min and keep it for 12 h, and then increase the temperature to 100 °C at a rate of 5 °C / min. Incubate at 200°C for 12 h. After the hydrothermal kettle was naturally cooled to room temperature, the hydrothermal product was washed with deionized water until no Cl was detected. - . Then put the obtained precipitate in an oven, set the temperature at 60°C for 20 hours, after the drying is completed, transfer it to a crucible in a muffle furnace, heat up to 800°C at a rate of 120°C / h and roast for 5 hours, and naturally cool down to obtain ZrO 2 carrier. ZrO 2 The carrier was ground to powder, and 2.0 g powdered ZrO was weighed 2 Carrier, ...
Embodiment 2
[0026] Take ZrO(NO 3 ) 2 and (NH 4 ) 2 SO 4 (The molar ratio is 6:1) was dissolved in 140 mL deionized water, stirred for 20 min to obtain a mixed solution. Transfer the mixed solution into a hydrothermal reaction kettle with a volume of 200 mL, place it in a forced air drying oven, raise the temperature to 100 °C at a rate of 5 °C / min and keep it for 10 h, and then increase the temperature to 100 °C at a rate of 5 °C / min. Incubate at 200°C for 20 h. After the hydrothermal kettle was naturally cooled to room temperature, the hydrothermal product was transferred to a centrifuge cup, and the hydrothermal product was washed with deionized water until no Cl was detected. - . Then put the obtained precipitate in an oven, set the temperature at 60°C for 20 hours, after the drying is completed, transfer it to a crucible in a muffle furnace, heat up to 800°C at a rate of 60°C / h and bake for 6 hours, then cool down naturally get ZrO 2 carrier. ZrO 2 Carrier ground to powder, ...
Embodiment 3
[0028] Take Zr(NO 3 ) 4 and (NH 4 ) 2 SO 4(4:1 by molar ratio) was dissolved in 140 mL deionized water, stirred for 20 min to obtain a mixed solution. Transfer the mixed solution into a hydrothermal reaction kettle with a volume of 200 mL, place it in a forced air drying oven, raise the temperature to 100 °C at a rate of 5 °C / min and keep it for 20 h, and then increase the temperature to 100 °C at a rate of 5 °C / min. Incubate at 200°C for 15 h. After the hydrothermal kettle was naturally cooled to room temperature, the hydrothermal product was transferred to a centrifuge cup, and the hydrothermal product was washed with deionized water until no Cl was detected. - . Then put the obtained precipitate in an oven, set the temperature at 60°C for 20 h, after the drying is completed, transfer it to a crucible in a muffle furnace, heat up to 800°C at a rate of 180°C / h and bake for 4 h, then cool down naturally get ZrO 2 carrier. ZrO 2 Carrier ground to powder, weigh 2.0g po...
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