Preparation method of carbon-manganese tungsten complex catalyst
A technology of composite manganese tungstate catalyst and sodium tungstate, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of poor effect and inability to obtain degradation rate and other problems to achieve the effect of improving the degradation rate and promoting dispersion.
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Embodiment 1
[0009] Add 10 g of manganese dichloride to 100 mL of water to prepare a solution, then add 4 g of sodium tungstate to the solution, stir in a water bath at 60~70°C for 50 minutes, then add 5 g of nonionic surfactant triton X-100 (Triton X-100) was stirred for 15 minutes, and 1 g of acetone was added during continuous stirring. After stirring for 10 minutes, the solution was transferred to a hydrothermal reactor, reacted for 10 h at 260 ° C, and filtered to obtain a solid. Wash 5 times with distilled water, dry at 80°C, place in a tube furnace, feed nitrogen, raise the temperature to 850°C at a rate of 15°C / min, keep it for 120 minutes, and cool down to room temperature under the condition of continuously feeding nitrogen , that is, a carbon composite manganese tungstate catalyst is obtained.
[0010] 0.5 g of carbon-composite manganese tungstate catalyst was added to 200 mL of methylene blue wastewater with a concentration of 25 mg / L, and reacted for 100 min under the irradiat...
Embodiment 2
[0012] Add 5 g of manganese dichloride to 50 mL of water to prepare a solution, then add 3 g of sodium tungstate to the solution, stir in a water bath at 60°C for 10 minutes, then add 4 g of nonionic surfactant Triton X- 100 (Triton X-100) and stirred for 10 minutes, then added 5 g of acetone while continuing to stir, and continued to stir for 5 minutes, then transferred the solution to a hydrothermal reactor, reacted for 5 hours at 180°C, filtered to obtain a solid, and washed with distilled water 3 times, dry at 80°C, place in a tube furnace, feed nitrogen, raise the temperature to 700°C at a rate of 10°C / min, keep it for 30 minutes, and cool down to room temperature under the condition of continuously feeding nitrogen to obtain A carbon composite manganese tungstate catalyst.
[0013] 0.5 g of carbon-composite manganese tungstate catalyst was added to 300 mL of acid scarlet wastewater with a concentration of 25 mg / L, and reacted for 100 min under the irradiation of 120 W LE...
Embodiment 3
[0015] Add 8 g of manganese dichloride to 90 mL of water to prepare a solution, then add 4 g of sodium tungstate to the solution, stir in a water bath at 70°C for 30 minutes, then add 5 g of nonionic surfactant Triton X- 100 (Triton X-100) and stirred for 15 minutes, then added 4 g of acetone while continuing to stir, and continued to stir for 10 minutes, then transferred the solution to a hydrothermal reactor, reacted for 10 h at 260°C, filtered to obtain a solid, and washed with distilled water Wash 5 times, dry at 80°C, place in a tube furnace, feed nitrogen, raise the temperature to 800°C at a rate of 15°C / min, keep it for 120 minutes, and cool down to room temperature under the condition of continuously feeding nitrogen, that is A carbon composite manganese tungstate catalyst is obtained.
[0016] 0.5 g of carbon-composite manganese tungstate catalyst was added to 300 mL of Rhodamine B wastewater with a concentration of 25 mg / L, and reacted for 100 min under the irradiati...
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