Active carbon micro-sphere absorption material and preparation method thereof

A technology of adsorption materials and carbon microspheres, applied in chemical instruments and methods, carbon compounds, other chemical processes, etc., can solve problems such as polluting the environment, increasing processing costs, and reducing utilization efficiency

Inactive Publication Date: 2008-03-19
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, although such powdered activated carbon microspheres have excellent adsorption properties, there are many serious defects in practical applications, for example, because they are powdery and easy to flow, they are prone to loss during pro

Method used

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  • Active carbon micro-sphere absorption material and preparation method thereof
  • Active carbon micro-sphere absorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Step 1: Preparation of mesophase pitch microspheres

[0059] Add 2% N to 500g petroleum residue bitumen 110 Carbon black, at a temperature of 410°C and a pressure of 0.1Mpa, keep a constant temperature for 4.5 hours to carry out a thermal polycondensation reaction. The thermal polycondensation product obtained after the reaction is completed, and the pyridine solvent is used according to the weight-to-volume ratio of the thermal polycondensation product to the pyridine solvent of 1:10. Carry out extraction and separation, after separation, wash with acetone, and then dry at a temperature of -0.1Mpa and 110°C for 5 hours in a vacuum, so as to obtain 180g of mesophase pitch microspheres. In Figure 1, the figure clearly shows that most of the products in this product are of regular spherical shape.

[0060] Step 2: Preparation of powdered activated carbon microspheres

[0061] After mixing 10 g of the prepared mesophase pitch microspheres with 80 g of KOH, the temperatur...

Embodiment 2

[0071] Step 1: Preparation of mesophase pitch microspheres

[0072] Add 2% N to 400g petroleum residue bitumen 110 Carbon black is kept at a constant temperature of 400° C. and a pressure of 2 Mpa for 5 hours to carry out thermal polycondensation reaction. The thermal polycondensation product obtained after the reaction is carried out using a tetrahydrofuran solvent according to the weight-to-volume ratio of the thermal polycondensation product to the tetrahydrofuran solvent of 1:10. After extraction and separation, after separation, wash with acetone, and then dry at -0.1MPa and 100°C for 5 hours in a vacuum to obtain 215g of mesophase pitch microspheres, which can be clearly seen by using a CambridgeS-250 MK III scanning electron microscope. Most of the products in this product are in regular spherical shape.

[0073] Step 2: Preparation of powdered activated carbon microspheres

[0074] After mixing 10g of mesophase pitch microspheres with 100g of NaOH, keep a constant te...

Embodiment 3

[0084] Step 1: Preparation of mesophase pitch microspheres

[0085] Get 300g of coal tar pitch, keep a constant temperature for 5 hours at a temperature of 390°C and a pressure of 3Mpa to carry out a thermal polycondensation reaction. Use quinoline solvent for extraction and separation, after separation, wash with acetone, and then dry in vacuum -0.9MPa and 160°C for 5 hours, so as to obtain 135g of mesophase pitch microspheres, using a Cambridge S-250 MK III scanning electron microscope Observation, it can be clearly seen that most of the products in this product are in regular spherical shape.

[0086] Step 2: Preparation of powdered activated carbon microspheres

[0087]After mixing 12g of the prepared mesophase pitch microspheres with 2gKOH and 6gNaOH, the temperature was maintained at a constant temperature of 750°C for 2.5 hours for activation reaction. After the activation reaction was completed, the resulting product was cooled to room temperature, washed three times ...

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Abstract

The invention provides an activated carbon micro-sphere adsorption material. The material consists of activated carbon micro-sphere power and the adhesive, which are prepared according to the weight ratio of 100-150: 8-15, the specific surface area of the material is 2000-2800m2/g, the pore volume of the material is 1.8-2.6cm3/g and the medium pore content is 50-70 percent. The invention also provides a preparation method of the activated carbon micro-sphere adsorption material. The method is as follows: the activated carbon micro-sphere power and the adhesive are molded after uniform mixing, and the mixture is processed through heat treatment to obtain the activated carbon micro-sphere adsorption material. The activated carbon micro-sphere adsorption material of the invention has good adsorption performance and convenient application.

Description

【Technical field】 [0001] The invention relates to the field of micron materials, more specifically, the invention relates to an activated carbon microsphere adsorption material and a preparation method thereof. 【Background technique】 [0002] As one of the most commonly used adsorbents, activated carbon materials are widely used in industrial fields such as environmental protection and pharmaceuticals. The specific surface area of ​​conventional activated carbon is small (generally 1500m 2 / g), slow adsorption speed, and low efficiency, therefore, it has been unable to meet the growing requirements for them in important fields such as environmental protection, medicine, and capacitors. In order to improve the adsorption performance of activated carbon, a lot of research work has been done. For example, P. Ehrburger, N, Pusset, and P. Dziedzini prepared activated mesocarbon microspheres (AMCMBs) from mesocarbon microspheres (MCMBs) by physical activation in Carbon, 30 (1992...

Claims

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Application Information

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IPC IPC(8): C01B31/08C01B31/14B01J20/20C01B32/384
Inventor 薛锐生沈曾民邵晓红汪文川
Owner BEIJING UNIV OF CHEM TECH
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