Preparation method for sulfur functionalization carbon foam

Inactive Publication Date: 2012-07-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this carbon foam material, there are disadvantages such as the relative inertness of surface carbon atoms, which greatly affects the adsorption and removal ability of carbon foam to metal ions in wastewater, thus limiting the further application of carbon foam materials in the field of environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Press phloroglucinol: surfactant: p-mercaptophenol: ethanol: water: mass fraction is 37% hydrochloric acid solution: mass fraction is 37% formaldehyde solution=1: 1: 0.02: 5: 5: 0.05: 1 mass The number of servings is taken. First mix phloroglucinol, surfactant, p-mercaptophenol, ethanol and water, and then add hydrochloric acid solution as a catalyst. After stirring for 30 min, formaldehyde solution was added. After continuing to stir for 30 minutes, the mixed solution was divided into upper and lower layers, and the lower layer solution was separated to continue stirring for 3 hours to obtain block polymer. After the obtained polymer was dried at 100°C for 2 hours, it was heated to 600°C for carbonization in a tube furnace under nitrogen protection at a heating rate of 0.5°C / min, and finally cooled down to room temperature naturally to obtain sulfur-functionalized carbon foam. After measurement, the pore size distribution of the obtained carbon foam is between 2 and ...

Embodiment 2

[0017] Press phloroglucinol: surfactant: p-mercaptophenol: ethanol: water: mass fraction is 37% hydrochloric acid solution: mass fraction is 37% formaldehyde solution=1: 1: 0.1: 10: 10: 0.1: 1 mass The number of servings is taken. First mix phloroglucinol, surfactant, p-mercaptophenol, ethanol and water, and then add hydrochloric acid solution as a catalyst. After stirring for 45min, formaldehyde solution was added. After continuing to stir for 45 min, the mixed solution was divided into upper and lower layers, and the lower layer solution was separated and continued to stir for 5 h to obtain block polymer. After the obtained polymer was dried at 80°C for 6 hours, it was heated to 700°C for carbonization in a tube furnace under nitrogen protection at a heating rate of 1°C / min, and finally cooled down to room temperature naturally to obtain sulfur-functionalized carbon foam. After measurement, the pore size distribution of the obtained carbon foam is between 2 and 8nm, and th...

Embodiment 3

[0019] Press phloroglucinol: surfactant: p-mercaptophenol: ethanol: water: mass fraction is 37% hydrochloric acid solution: mass fraction is 37% formaldehyde solution=1: 1: 0.2: 20: 20: 0.1: 1 mass The number of servings is taken. First mix phloroglucinol, surfactant, p-mercaptophenol, ethanol and water, and then add hydrochloric acid solution as a catalyst. After stirring for 45min, formaldehyde solution was added. After continuing to stir for 45 min, the mixed solution was divided into upper and lower layers, and the lower layer solution was separated and continued to stir for 10 h to obtain block polymer. After the obtained polymer was dried at 60°C for 12 hours, it was heated to 900°C for carbonization in a tube furnace under nitrogen protection at a heating rate of 5°C / min, and finally cooled down to room temperature naturally to obtain sulfur-functionalized carbon foam. After measurement, the pore size distribution of the obtained carbon foam is between 2 and 8nm, and ...

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Abstract

The invention relates to a preparation method for sulfur functionalization carbon foam, which comprises the steps of measuring components according to the parts by weight of phloroglucinol: surface active agent: monomer containing sulfur: ethanol: hydrochloric acid solution of 37% by mass: formaldehyde solution 37% by mass=1:1:0.02-0.4:5-50:5-50: 0.05-0.2:1; evenly mixing the phloroglucinol, the surface active agent, the monomer containing the sulfur, the ethanol and water, adding the hydrochloric acid solution to serve as a catalyst, adding the formaldehyde solution after mixing the mixed solution for 30-60 minutes, continuously mixing the mixed solution for 30-60 minutes and enabling the mixed solution to be separated into an upper layer and a lower layer, continuously mixing the lower layer of solution obtained through separation for 3-24 hours, and obtaining polymer in a block shape; drying the polymer at the temperature of 40-100 DEG C for 2-24 hours, arranging the polymer in a tube furnace, protecting the polymer with nitrogen, heating the polymer to the temperature of 600-1000 DEG C at a temperature increasing velocity of 0.5-10DEG C / min for carbonization, and finally cooling the polymer naturally to the room temperature to obtain the sulfur functionalization carbon foam. The sulfur functionalization carbon foam prepared by the method has important application value foradsorbing and removing heavy metal mercury irons in waste water.

Description

technical field [0001] The invention relates to a preparation method of sulfur functionalized carbon foam. Specifically, it refers to the use of polyethylene oxide-polypropylene oxide triblock copolymer surfactant as a structure-directing agent, phloroglucinol and formaldehyde as carbon sources, and the preparation of sulfur-functionalized carbon foams by adding sulfur-containing monomers Methods. Background technique [0002] Carbon foam is a carbon material with a continuous porous network structure. This carbon material has a unique structure and excellent physical properties such as a high specific surface area, good corrosion resistance, thermal stability, excellent adsorption, good compression resistance, and a highly open pore structure. Therefore, it is used in Adsorption and separation, catalysts and catalyst supports, electrode materials and other fields have very broad and very important application prospects. For example, the title of the invention is "carbon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/02C02F1/28C02F1/62C01B32/05
Inventor 刘明贤甘礼华徐亮吕耀康
Owner TONGJI UNIV
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