Preparation method of lignin hierarchical porous carbon material with endellite as template

A lignin-based, multi-level porous technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. Excellent regeneration performance

Inactive Publication Date: 2016-06-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are a lot of research work on the preparation of hierarchically porous carbon materials, but there is little research on the use of hierarchically porous carbon materials for antibiotic adsorption in aqueous environments.

Method used

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  • Preparation method of lignin hierarchical porous carbon material with endellite as template
  • Preparation method of lignin hierarchical porous carbon material with endellite as template
  • Preparation method of lignin hierarchical porous carbon material with endellite as template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation of lignin-based template carbon materials

[0042] In the present invention, a lignin-based template carbon material is prepared by a liquid-phase impregnation method. 2 g of halloysite is weighed, added to 100 mL of a hydrochloric acid solution with a concentration of 1 mol / L, heated to 40 ° C, reacted for 1 h, suction filtered, and rinsed with a large amount of distilled water until Neutral, drying, to obtain the halloysite after purification, the halloysite after 2g purification process is mixed with 6g mass fraction as 20% sodium lignosulfonate solution, the mixture is placed statically under negative pressure conditions (-0.1 Mpa) for 2 hours, centrifuge at a high speed of 2000r / min for 1.5 hours to achieve the effect of compact accumulation, then dry the lower layer of solids to constant weight, put them into a porcelain boat after weighing, and place them in a tube furnace. Under the protection of a nitrogen atmosphere, the temperature was raised ...

Embodiment 2

[0046] (1) Preparation of lignin-based template carbon materials

[0047] Prepare lignin-based template carbon materials by liquid-phase impregnation method, weigh 5g of halloysite, add it to 100mL hydrochloric acid solution with a concentration of 4mol / L, heat to 80°C, react for 6h, filter with suction, wash with a large amount of distilled water until neutral , dried to obtain the purified halloysite, mix 2g of the purified halloysite with 10g of sodium lignosulfonate solution with a mass fraction of 40%, and place the mixture under negative pressure conditions (-0.3Mpa) After 4 hours, centrifuge at a high speed of 4000r / min for 2.5 hours to achieve the effect of close packing, then dry the lower layer of solids to constant weight, put them into a porcelain boat after weighing, place them in a tube furnace, and store them in a nitrogen atmosphere. Under the protection of the atmosphere, to 7 o C / min heating rate from room temperature to 600 o C and calcined at this tempera...

Embodiment 3

[0051] (1) Preparation of lignin-based template carbon materials

[0052] Prepare lignin-based template carbon materials by liquid-phase impregnation method, weigh 3g of halloysite, add it to 100mL hydrochloric acid solution with a concentration of 3mol / L, heat to 60°C, react for 4h, filter with suction, rinse with a large amount of distilled water until neutral , dried to obtain the purified halloysite, mix 2g of the purified halloysite with 8g of 30% sodium lignosulfonate solution, and place the mixture under negative pressure conditions (-0.2Mpa) After 3 hours, centrifuge at a high speed of 3000r / min for 2 hours to achieve a close-packed effect, then dry the lower layer of solids to constant weight, put them into a porcelain boat after weighing, place them in a tube furnace, and store them in a nitrogen atmosphere. under the protection of 5 o C / min heating rate from room temperature to 500 o C and calcined at this temperature for 2 h, then cooled to room temperature natur...

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Abstract

The invention relates to a method for preparing a lignin-based hierarchical porous carbon material with halloysite as a template, which belongs to the technical field of environmental functional material preparation; the invention uses halloysite nanotubes, a natural mineral that is abundant in reserves and cheap and easy to obtain, as a template ; Sodium lignosulfonate and halloysite are mixed by liquid phase impregnation; then calcined, the template carbon material is initially obtained, which contains more mesopores and macropores; pores, and further obtain hierarchical porous carbon materials; the hierarchical porous carbon materials prepared by this method have been successfully applied to the efficient separation of tetracycline and chloramphenicol in aqueous environments, and have excellent regeneration performance.

Description

technical field [0001] The invention relates to a preparation method of a lignin-based hierarchical porous carbon material with halloysite as a template, belonging to the technical field of preparation of environmental functional materials. Background technique [0002] At present, antibiotics are widely used in the treatment and prevention of diseases in agriculture, animal husbandry, disease treatment and other fields. However, most antibiotics are directly transferred to the environment with excretion because they cannot be metabolized by organisms, so that the enhancement of bacterial resistance can have adverse effects on the ecosystem. Today, in many countries, including China, antibiotics are frequently detected in effluent from sewage treatment plants, surface water, groundwater, and even drinking water. Since tetracycline has serious toxic and side effects on organisms, long-term trace intake and accumulation in organisms can inhibit the growth of organisms, causin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/58
CPCB01J20/20B01J20/041C02F1/281C02F1/283C02F2101/30
Inventor 马平周志平戴江栋野绪波
Owner JIANGSU UNIV
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