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.

Inactive Publication Date: 2017-12-19
柳州若思纳米材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of using manganese tungstate alone as a photocata...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses a preparation method of a carbon-manganese tungsten complex catalyst. The preparation method comprises the following steps: adding 5 to 10g of manganese dichloride into 50 to 100mL of water to prepare a solution; then adding 3 to 4g of sodium tungstate into the solution and stirring for 10 to 50 minutes in water bath of 60 to 70 DEG C; then adding 4 to 5g of surfactant Triton X-100 and stirring for 10 to 15 minutes; then adding 1 to 5g of acetone in a continuous stirring process; continuously stirring for 5 to 10 minutes; transferring the solution into a hydrothermal reactor, carrying out reaction for 5 to 10 hours at temperature of 180 to 260 DEG C; carrying out filtration to obtain a solid; washing the solid for 3 to 5 times with distilled water; drying the washed solid at 80 DEG C; putting the dried solid into a tubular furnace; introducing nitrogen gas into the tubular furnace; heating to 700 to 850 DEG C at speed of 10 to 15 DEG C/min and keeping for 30 to 120 minutes; cooling to room temperature under a condition of continuously introducing nitrogen gas so as to obtain the carbon-manganese tungsten complex catalyst. The preparation method of the carbon-manganese tungsten complex catalyst disclosed by the invention has the advantages that by utilizing effects of the nonionic surfactant and acetone, a carbon layer is formed at high temperature and is compounded with manganese tungsten, so that dispersion of manganese tungsten is promoted, and degradation speed of pollutants is improved.

Description

technical field [0001] The invention relates to the field of new materials for environmental pollution control, in particular to a preparation method of a carbon-composite manganese tungstate catalyst. Background technique [0002] With the development of science and technology, toxic organic pollutants from industrial and agricultural production seriously threaten the environment and human health. It is of great significance to seek a new and efficient environmental governance technology. Photocatalytic technology has become an emerging environmental treatment technology with important application prospects due to its advantages of energy saving, high efficiency, complete pollutant degradation, and no secondary pollution. In recent years, the development of new and efficient visible light photocatalysts has become an important research content in photocatalytic technology. Among them, photocatalytic materials with surface plasmon resonance effect, because of their unique su...

Claims

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Application Information

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IPC IPC(8): B01J23/34
CPCB01J23/34
Inventor 程昊
Owner 柳州若思纳米材料科技有限公司
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