Effect of pre-oxidation of pitch by H 2O 2 on porosity of activated carbons

Young Ha Kim; Soo Jin Park

Effect of pre-oxidation of pitch by H ₂O ₂ on porosity of activated carbons

Young Ha Kim, Soo Jin Park

Inha University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Activated carbons (ACs) have been prepared from pitch by the combination of a chemical oxidation with different H ₂O ₂ concentrations i.e., 5, 15, and 25 wt% and a chemical activation with KOH at a constant KOH/pitch ratio of 3/1. The influence of H ₂O ₂ solution on the microporous properties of the pitch and the final activated carbons were invested using XRD, FT-IR, XPS, N ₂-adsorption, and SEM. XRD indicated that the value of interplanar distance d ₀₀₂ increased by chemical oxidation. FT-IR and XPS results showed that the chemical oxidation promoted the formation of surface oxygen functionalities. Also, the specific surface area of the resulting ACs was increased with increasing the concentration of H ₂O ₂ chemical oxidation and showed a maximum value of 2111 m ²/g at 25 wt% H ₂O ₂ concentration.

Original language	English
Pages (from-to)	183-187
Number of pages	5
Journal	Applied Chemistry for Engineering
Volume	21
Issue number	2
State	Published - Apr 2010

Keywords

Activated carbons
Chemical oxidation
H O
Pitch

Cite this

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title = "Effect of pre-oxidation of pitch by H 2O 2 on porosity of activated carbons",

abstract = "Activated carbons (ACs) have been prepared from pitch by the combination of a chemical oxidation with different H 2O 2 concentrations i.e., 5, 15, and 25 wt% and a chemical activation with KOH at a constant KOH/pitch ratio of 3/1. The influence of H 2O 2 solution on the microporous properties of the pitch and the final activated carbons were invested using XRD, FT-IR, XPS, N 2-adsorption, and SEM. XRD indicated that the value of interplanar distance d 002 increased by chemical oxidation. FT-IR and XPS results showed that the chemical oxidation promoted the formation of surface oxygen functionalities. Also, the specific surface area of the resulting ACs was increased with increasing the concentration of H 2O 2 chemical oxidation and showed a maximum value of 2111 m 2/g at 25 wt% H 2O 2 concentration.",

keywords = "Activated carbons, Chemical oxidation, H O, Pitch",

author = "Kim, {Young Ha} and Park, {Soo Jin}",

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T1 - Effect of pre-oxidation of pitch by H 2O 2 on porosity of activated carbons

AU - Kim, Young Ha

AU - Park, Soo Jin

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N2 - Activated carbons (ACs) have been prepared from pitch by the combination of a chemical oxidation with different H 2O 2 concentrations i.e., 5, 15, and 25 wt% and a chemical activation with KOH at a constant KOH/pitch ratio of 3/1. The influence of H 2O 2 solution on the microporous properties of the pitch and the final activated carbons were invested using XRD, FT-IR, XPS, N 2-adsorption, and SEM. XRD indicated that the value of interplanar distance d 002 increased by chemical oxidation. FT-IR and XPS results showed that the chemical oxidation promoted the formation of surface oxygen functionalities. Also, the specific surface area of the resulting ACs was increased with increasing the concentration of H 2O 2 chemical oxidation and showed a maximum value of 2111 m 2/g at 25 wt% H 2O 2 concentration.

AB - Activated carbons (ACs) have been prepared from pitch by the combination of a chemical oxidation with different H 2O 2 concentrations i.e., 5, 15, and 25 wt% and a chemical activation with KOH at a constant KOH/pitch ratio of 3/1. The influence of H 2O 2 solution on the microporous properties of the pitch and the final activated carbons were invested using XRD, FT-IR, XPS, N 2-adsorption, and SEM. XRD indicated that the value of interplanar distance d 002 increased by chemical oxidation. FT-IR and XPS results showed that the chemical oxidation promoted the formation of surface oxygen functionalities. Also, the specific surface area of the resulting ACs was increased with increasing the concentration of H 2O 2 chemical oxidation and showed a maximum value of 2111 m 2/g at 25 wt% H 2O 2 concentration.

KW - Activated carbons

KW - Chemical oxidation

KW - H O

KW - Pitch

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ER -

Effect of pre-oxidation of pitch by H ₂O ₂ on porosity of activated carbons

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Keywords

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