Method for preparing porous carbon spheres from ripe fruits of Liquidambar formosana hance, and adsorption application thereof

A liquidambar tree and porous carbon technology, which is applied in the field of preparing porous carbon spheres, can solve the problems of high preparation cost and complicated preparation conditions of porous carbon materials, and achieve the effect of simple method and convenient storage and transportation

Inactive Publication Date: 2016-08-31
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems such as the high preparation cost and the complicated preparation conditions of porous carbon materials in the prior art, and provides a kind of raw material th

Method used

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  • Method for preparing porous carbon spheres from ripe fruits of Liquidambar formosana hance, and adsorption application thereof
  • Method for preparing porous carbon spheres from ripe fruits of Liquidambar formosana hance, and adsorption application thereof
  • Method for preparing porous carbon spheres from ripe fruits of Liquidambar formosana hance, and adsorption application thereof

Examples

Experimental program
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Example Embodiment

[0022] Example 1

[0023] Take 1.5g of paraffin oil (stained with Oil Red O) and drop it onto the water surface to form an oil film. A charring (heating rate of 10°C / min, 400°C for 1 hour, 600°C for 2.5 hours) of Liquidambar formosana cones was placed on the edge of the oil film. After the carbon ball is put in, the oil film shrinks rapidly and sucks the carbon ball. After all the oil film is inhaled, the carbon ball is taken out, and the ball is immersed in n-hexane to desorb the paraffin oil.

Example Embodiment

[0024] Example 2

[0025] After carbonization (heating rate of 10℃ / min, 400℃ for 1h, 600℃ for 2.5h), the sweetgum cones are immersed in paraffin oil. After a certain period of time, take them out and stay in the air for 1-2 minutes. Perform weighing. The oil absorption mass is the weight after adsorption minus the initial carbon ball mass, and the oil absorption is the ratio of the oil absorption mass to the initial mass of the ball (g / g). The carbonized Liquidambar formosana cones have an adsorption capacity of 2.4 g / g for paraffin oil.

[0026] The carbon ball saturated with adsorption is put into an organic solvent (n-hexane) for desorption. The desorption rate is the ratio of the weight of the desorbed oil to the weight of the oil absorbed. The weight of the desorption oil is the difference between the ball weights before and after the desorption. The carbon ball can completely desorb within 5 minutes, and the desorption rate can reach 99%. The desorbed ball was dried at 60...

Example Embodiment

[0027] Example 3

[0028] After carbonization (heating rate is 5℃ / min, 300℃ for 1h, 600℃ for 3h), the sweetgum cones are immersed in turpentine oil, after a certain period of time, take them out, stay in the air for 1-2 minutes, and weigh weight. The oil absorption mass is the weight after adsorption minus the initial mass, and the oil absorption is the ratio of the oil absorption mass to the initial mass of the ball (g / g). The carbonized sweetgum cones have an adsorption capacity of 1.9 g / g for turpentine. After 10 cycles, the carbon ball basically maintains the same adsorption and desorption capacity (1.89g / g), and has excellent recycling performance.

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Abstract

The invention discloses a simple method for preparing porous carbon spheres from ripe fruits (capitate infructescence) of Liquidambar formosana hance. The porous carbon spheres with certain mechanical strength can be obtained through a simple charring process by using the method. The carbon spheres keep the spherical structure and the tunnel structure of original fruit spheres, have extremely strong lipophilic and hydrophobic properties, can float on the water surface, and can rapidly adsorb various oils and organic solvents on the water surface. The carbon spheres have excellent desorption performance (reaching 99%) and cycle use performances. Raw materials of the above product are abundant and cheap, the preparation method is concise, and the product has high oil or organic matter adsorption performance, so the carbon spheres are a functionalized material having extremely good prospect and being used for adsorbing and recovering oil stains and organic solvents on water.

Description

technical field [0001] The present invention uses mature fruit of trees as raw material to prepare porous carbon balls, specifically a kind of porous carbon ball with rich and cheap natural plant fruit (capitum inflorescence of liquidambar tree) as raw material, and obtains porous carbon balls with hydrophobic and lipophilic properties through a simple carbonization process. Porous carbon balls are used to absorb and recover oil or organic solvents on the water surface. Background technique [0002] Due to the immiscibility of oil and water and the specific gravity of oil is less than that of water, the oil or part of the organic solvent leaked on the water surface will form a thin film on the water surface. The formation of oil film not only causes serious damage to the ecosystem in the water body, but also affects human life and health. In addition, due to the stability of the oil, its long-term impact on the contaminated area requires rapid treatment of the oil spilled a...

Claims

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Application Information

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IPC IPC(8): C01B31/02B01J20/20
CPCB01J20/20C01P2004/01
Inventor 姚建峰冯艺刘世长
Owner NANJING FORESTRY UNIV
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