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A kind of sargassum-based activated carbon and its preparation method and application

A technology of sargassum and activated carbon, applied in separation methods, chemical instruments and methods, inorganic chemistry, etc., to achieve the effect of simple processing method, low price, and convenient collection

Active Publication Date: 2017-05-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the relevant studies have reported the effect of activated carbon pore structure, oxygen-containing functional groups on the surface, and metal catalysts on the low-temperature SCR reaction. There are few reports on the influence of surface nitrogen-containing functional groups on the removal of NO by low-temperature SCR. Activated carbon direct reduction of NO X Some progress has been made in the study of the role of the gas-solid phase reaction, and the results show that the surface nitrogen-containing functional groups play an important role in the reaction of activated carbon to reduce NO

Method used

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  • A kind of sargassum-based activated carbon and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0035] Example 1AC (0.5:1-ZnCl 2 -CO 2 -500℃-1h):

[0036] Raw material Sargassum and ZnCl 2Add the chemical activator into a beaker containing 15mL of aqueous solution in a mass ratio of 1:1, and vibrate ultrasonically for 1 hour to make it evenly mixed; place it in a vacuum drying oven after immersing at 105°C for 12 hours after ultrasonic vibration; then use a crucible Place the impregnated mixture in a quartz tube furnace, and raise the temperature from room temperature to 500°C at a rate of 10°C / min under the protection of nitrogen; 2 gas, and stay at this temperature for 1 hour; after naturally cooling to room temperature, wash with 1mol / L HCl solution for several times and then rinse with distilled water until the filtrate is neutral; finally in a vacuum oven at 110°C Drying for 1 hour to obtain sargassum-based activated carbon.

[0037] The sargassum-based activated carbon prepared by this example is tested for its selective catalytic reduction ability to nitrogen ...

Embodiment 2A

[0039] Example 2AC (1:1-ZnCl 2 -CO 2 -500℃-1h):

[0040] Raw material Sargassum and ZnCl 2 Add the chemical activator into a beaker containing 15mL of aqueous solution in a mass ratio of 1:1, and vibrate ultrasonically for 1 hour to make it evenly mixed; place it in a vacuum drying oven after immersing at 105°C for 12 hours after ultrasonic vibration; then use a crucible Place the impregnated mixture in a quartz tube furnace, and raise the temperature from room temperature to 500°C at a rate of 10°C / min under the protection of nitrogen; 2 gas, and stay at this temperature for 1 hour; after naturally cooling to room temperature, wash with 1mol / L HCl solution for several times and then rinse with distilled water until the filtrate is neutral; finally in a vacuum oven at 110°C Drying for 1 hour to obtain sargassum-based activated carbon.

[0041] The sargassum-based activated carbon prepared by this example is tested for its selective catalytic reduction ability to nitrogen o...

Embodiment 3A

[0043] Example 3AC (2:1-H 3 PO 4 -CO 2 -500℃-1h):

[0044] The raw material Sargassum and H 3 PO 4 Add the chemical activator into a beaker containing 15mL of aqueous solution in a mass ratio of 2:1, and vibrate ultrasonically for 1 hour to make it evenly mixed; after ultrasonically vibrating, place it in a vacuum drying oven at 105°C for 12 hours; then use a crucible Place the impregnated mixture in a quartz tube furnace, and raise the temperature from room temperature to 500°C at a rate of 10°C / min under the protection of nitrogen; 2 gas, and stay at this temperature for 1 hour; after naturally cooling to room temperature, wash with 1mol / L HCl solution for several times and then rinse with distilled water until the filtrate is neutral; finally in a vacuum oven at 110°C Drying for 1 hour to obtain sargassum-based activated carbon.

[0045] The sargassum-based activated carbon prepared by this example is tested for its selective catalytic reduction ability to nitrogen ox...

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Abstract

The invention discloses sargassum-based activated carbon and a preparation method and an application thereof. The sargassum-based activated carbon is prepared from sargassum by carbonization and activation. The sargassum-based activated carbon disclosed by the invention is high in removal rate for nitric oxide, wide in low-temperature active window, low in raw material cost, and simple to prepare. When nitric oxides in flue gas and waste gas are processed by adopting a catalyst prepared by the method, the removal rate for the nitric oxides can be up to 90% within a temperature range of 100-300 DEG C.

Description

technical field [0001] The invention relates to the field of preparation of activated carbon catalysts, in particular to a sargassum-based activated carbon and its preparation method and application. Background technique [0002] Nitrogen oxide (NOx) is one of the main air pollutants released during the combustion of fossil fuels. After entering the atmosphere, it is easy to cause photochemical smog, acid rain, and increased ozone concentration near the ground, which affect human health and development. Its control and Emission reduction has attracted widespread attention from all walks of life. Since the end of the 20th century, my country's economy has continued to grow rapidly. In order to meet the needs of economic development, China's consumption of fossil fuels has increased rapidly, resulting in increasing NOx emissions. Therefore, China has become the largest source of NOx emissions in Asia, and its emissions account for 41%-57% of the total NOx emissions in Asia. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/318C01B32/336C01B32/342B01J21/18B01D53/90B01D53/56B01D53/94
Inventor 李素静谭珊施贇
Owner ZHEJIANG UNIV
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