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Preparation method of sargassum horneri matrix activated carbon

A technology based on activated carbon and copper algae, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of copper algae industrialization and resource utilization are far from mature, and achieve improved pore expansion performance and low ash content , Strong specific adsorption performance

Active Publication Date: 2013-11-27
大同市金盛豪达炭业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the industrialization and resource utilization of copper algae are still far from mature and urgently need to be developed

Method used

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  • Preparation method of sargassum horneri matrix activated carbon
  • Preparation method of sargassum horneri matrix activated carbon
  • Preparation method of sargassum horneri matrix activated carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The copper algae collected in the Wenzhou sea area in southern Zhejiang were simply air-dried, washed with tap water to remove salt and impurities, then washed several times with deionized water, drained, and dried at 100°C for 24 hours to constant weight. The dried copper algae is crushed again, and the powder of 20-40 meshes is screened out. Weigh 10g of dry copper algae powder, add 100g of zinc chloride solution with a mass fraction of 50%, and stir at 25°C for 2h. Then the impregnation mixture was transferred to a vacuum tube furnace at a flow rate of 120L h -1 Under nitrogen protection, at 10°C·min -1 The temperature was raised to 500°C at a certain rate, and activated for 1h. Activate the obtained sample with 1mol·L -1 Boil the HCl solution for 30 minutes, continue to wash with boiling HCl solution for several times, wash with deionized water at 95°C until the pH remains unchanged, and then bake at 100°C for 24h to constant weight to obtain product A 1 .

[0...

Embodiment 2

[0027] The copper algae collected in the Wenzhou sea area in southern Zhejiang were simply air-dried, washed with tap water to remove salt and impurities, then washed several times with deionized water, drained, and dried at 100°C for 24 hours to constant weight. The dried copper algae is crushed again, and the powder of 20-40 meshes is screened out. Weigh 10g of dry copper algae powder, add 100g of zinc chloride solution with a mass fraction of 50%, and stir at 25°C for 10h. Then the impregnation mixture was transferred to a vacuum tube furnace at a flow rate of 100 L h -1 Under nitrogen protection, at 20°C·min -1 The temperature was raised to 600°C at a certain rate, and activated for 3 hours. Activate the obtained sample with 1mol·L -1 Boil the HCl solution for 30 minutes, continue to wash with boiling HCl solution for several times, wash with deionized water at 95°C until the pH remains unchanged, and then bake at 100°C for 24h to constant weight to obtain product A 2 ...

Embodiment 3

[0030] The copper algae collected in the Wenzhou sea area in southern Zhejiang were simply air-dried, washed with tap water to remove salt and impurities, then washed several times with deionized water, drained, and dried at 100°C for 24 hours to constant weight. The dried copper algae is crushed again, and the powder of 20-40 meshes is screened out. Weigh 10g of dry copper algae powder, add 100g of zinc chloride solution with a mass fraction of 30%, and stir at 25°C for 10h. Then the impregnation mixture was transferred to a vacuum tube furnace at a flow rate of 150L h -1 Under nitrogen protection, at 30°C·min -1 The temperature was raised to 600°C at a certain rate and activated for 1h. Activate the obtained sample with 1mol·L -1Boil the HCl solution for 30min, continue to wash with boiling HCl solution for several times, wash with deionized water at 95°C until the pH remains unchanged, and then bake at 100°C for 24h to constant weight to obtain product A 3 .

[0031] T...

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Abstract

The invention discloses a preparation method of sargassum horneri matrix activated carbon. The preparation method comprises the following steps: (1), mixing sargassum horneri powder and activator with water for impregnating treatment for 2-24 h; (2), placing the mixture I under an inert atmosphere, raising the temperature of the mixture I to 400-600 DEG C according to a rate of 10-30 DEG C / min; performing activating treatment on the mixture I for 1-3 h; then washing the mixture I with hot acid solution and hot distilled water in sequence until the pH value of the mixture does not change; drying the mixture I to obtain a product A; (3), mixing the product A with boiling oxidant solution to enable the product A to react with the boiling oxidant solution for 1-3 h; then, washing the mixture II with hot distilled water until the pH value of the mixture II does not change; drying the mixture II to obtain a product B; (4), performing high-heat treatment on the product B at 300-500 DEG C, so as to obtain the sargassum horneri matrix activated carbon. The activated carbon prepared through the preparation method has the advantages that most pores are mesoporous, the pores are well-developed, the ash content is low, and the adsorbability to hexavalent chromium is higher.

Description

technical field [0001] The invention relates to a method for preparing activated carbon, which is characterized in that copper algae is used as a raw material to prepare activated carbon. Background technique [0002] Activated carbon is a kind of porous substance, which has the advantages of developed pore structure, huge specific surface area, rich surface functional groups, and stable chemical properties, so it has been widely used. However, the activated carbon industry is still basically a "resource-consuming" industry. Therefore, the source of raw materials is an important reason that restricts the development of the activated carbon industry. At present, the raw materials for activated carbon preparation at home and abroad are mainly divided into: coal, wood and industrial products, and industrial and agricultural waste. In recent years, traditional raw materials are limited by issues such as resources, energy and the environment, making the search for activated carb...

Claims

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Application Information

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IPC IPC(8): C01B31/12C01B32/318C01B32/348
Inventor 曾淦宁艾宁周鸿艳
Owner 大同市金盛豪达炭业有限责任公司
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