Hierarchical pore structure of activated carbon fabricated by CO<sub>2</sub>/microwave for volatile organic compounds adsorption

Wenjuan Qiu; Kang Dou; Ying Zhou; Haifeng Huang; Yinfei Chen; Hanfeng Lu

doi:10.1016/j.cjche.2017.04.006

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Hierarchical pore structure of activated carbon fabricated by CO₂/microwave for volatile organic compounds adsorption

Separation Science and Engineering | Updated：2026-01-06

- Hierarchical pore structure of activated carbon fabricated by CO₂/microwave for volatile organic compounds adsorption
- Chinese Journal of Chemical Engineering Vol. 26, Issue 1, Pages: 81-88(2018)
- Affiliations：
  
  2 College of Chemical Engineering, Zhejiang University of Technology,Hangzhou,China,310014
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.04.006
  CLC：
- Published：2018
- Accepted：
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/microwave for volatile organic compounds adsorption[J]. Chinese Journal of Chemical Engineering, 2018, 26(1): 81-88.
DOI：

/microwave for volatile organic compounds adsorption[J]. Chinese Journal of Chemical Engineering, 2018, 26(1): 81-88. DOI： 10.1016/j.cjche.2017.04.006.

摘要

Abstract

An activated carbon pore-expanding technique was achieved through innovative reactivation by CO

/microwave. The original and modified activated carbons were characterized by nitrogen adsorption-desorption

scanning electron microscopy

transmission electron microcopy

and Fourier transform infrared spectroscopy. The mesopore volume increased from 0.122 cm

·g

-1

to 0.270 cm

·g

-1

and a hierarchical pore structure was formed. A gradual decrease in the phenolic hydroxyl and carboxyl groups on the surface of activated carbon enhanced the surface inertia of granular activated carbon (GAC). The toluene desorption rate of the modified sample increased by 8.81% compared with that of the original GAC. Adsorption isotherm fittings revealed that the Langmuir model was applicable for the original and modified activated carbons. The isosteric adsorption heat of toluene on the activated carbon decreased by approximately 50%

which endowed the modified sample with excellent stability in application. The modified samples showed an enhanced desorption performance of toluene

thereby opening a way to extend the cycle life and

improve the economic performance of carbon adsorbent in practical engineering applications.

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Hierarchical pore structure of activated carbon fabricated by CO2/microwave for volatile organic compounds adsorption

DOI：10.1016/j.cjche.2017.04.006

摘要

Abstract

关键词

Keywords

references

Hierarchical pore structure of activated carbon fabricated by CO₂/microwave for volatile organic compounds adsorption