Surface functionalization methodologies on activated carbons and their benzene adsorption

Prabhu Azhagapillai; Ahmed Al Shoaibi; Srinivasakannan Chandrasekar

doi:10.1007/s42823-020-00170-w

Surface functionalization methodologies on activated carbons and their benzene adsorption

Prabhu Azhagapillai, Ahmed Al Shoaibi, Srinivasakannan Chandrasekar

Chemical and Petroleum Engineering

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

25 Scopus citations

Abstract

The present work reports the effect of different functionalization methodologies on surface modification of porous carbon and its efficacy for benzene adsorption. The virgin and surface-modified adsorbents were characterized by FTIR, N₂ sorption analysis, SEM, and Boehm titration. The adsorption isotherms were measured at different temperatures using a highly sensitive magnetic suspension microbalance. At lower benzene concentration, the virgin carbon was found to possess reasonable adsorption capacity, while at higher benzene concentration, the surface-modified carbon tends to perform better. The maximum benzene adsorption capacity at 25 °C and vapor pressure of 90 mbar is as follows: 467 mg/g (NORIT-AC), 227 mg/g (AC-APS (1 M)), 388 mg/g (Norit-AC-HT), 492 mg/g (AC-HNO₃), and 531 mg/g (AC-H₂SO₄).

Original language	British English
Pages (from-to)	419-426
Number of pages	8
Journal	Carbon Letters
Volume	31
Issue number	3
DOIs	https://doi.org/10.1007/s42823-020-00170-w
State	Published - Jun 2021

Keywords

Adsorbents
Adsorption
Benzene
Characterization
Porous carbon

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title = "Surface functionalization methodologies on activated carbons and their benzene adsorption",

abstract = "The present work reports the effect of different functionalization methodologies on surface modification of porous carbon and its efficacy for benzene adsorption. The virgin and surface-modified adsorbents were characterized by FTIR, N2 sorption analysis, SEM, and Boehm titration. The adsorption isotherms were measured at different temperatures using a highly sensitive magnetic suspension microbalance. At lower benzene concentration, the virgin carbon was found to possess reasonable adsorption capacity, while at higher benzene concentration, the surface-modified carbon tends to perform better. The maximum benzene adsorption capacity at 25 °C and vapor pressure of 90 mbar is as follows: 467 mg/g (NORIT-AC), 227 mg/g (AC-APS (1 M)), 388 mg/g (Norit-AC-HT), 492 mg/g (AC-HNO3), and 531 mg/g (AC-H2SO4).",

keywords = "Adsorbents, Adsorption, Benzene, Characterization, Porous carbon",

author = "Prabhu Azhagapillai and {Al Shoaibi}, Ahmed and Srinivasakannan Chandrasekar",

note = "Funding Information: The authors would like to thanks the Gas Processing and Materials Science Research Centre (GRC-003), Khalifa University (formerly The Petroleum Institute) for financial support. Publisher Copyright: {\textcopyright} 2020, Korean Carbon Society.",

year = "2021",

month = jun,

doi = "10.1007/s42823-020-00170-w",

language = "British English",

volume = "31",

pages = "419--426",

journal = "Carbon Letters",

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TY - JOUR

T1 - Surface functionalization methodologies on activated carbons and their benzene adsorption

AU - Azhagapillai, Prabhu

AU - Al Shoaibi, Ahmed

AU - Chandrasekar, Srinivasakannan

N1 - Funding Information: The authors would like to thanks the Gas Processing and Materials Science Research Centre (GRC-003), Khalifa University (formerly The Petroleum Institute) for financial support. Publisher Copyright: © 2020, Korean Carbon Society.

PY - 2021/6

Y1 - 2021/6

N2 - The present work reports the effect of different functionalization methodologies on surface modification of porous carbon and its efficacy for benzene adsorption. The virgin and surface-modified adsorbents were characterized by FTIR, N2 sorption analysis, SEM, and Boehm titration. The adsorption isotherms were measured at different temperatures using a highly sensitive magnetic suspension microbalance. At lower benzene concentration, the virgin carbon was found to possess reasonable adsorption capacity, while at higher benzene concentration, the surface-modified carbon tends to perform better. The maximum benzene adsorption capacity at 25 °C and vapor pressure of 90 mbar is as follows: 467 mg/g (NORIT-AC), 227 mg/g (AC-APS (1 M)), 388 mg/g (Norit-AC-HT), 492 mg/g (AC-HNO3), and 531 mg/g (AC-H2SO4).

AB - The present work reports the effect of different functionalization methodologies on surface modification of porous carbon and its efficacy for benzene adsorption. The virgin and surface-modified adsorbents were characterized by FTIR, N2 sorption analysis, SEM, and Boehm titration. The adsorption isotherms were measured at different temperatures using a highly sensitive magnetic suspension microbalance. At lower benzene concentration, the virgin carbon was found to possess reasonable adsorption capacity, while at higher benzene concentration, the surface-modified carbon tends to perform better. The maximum benzene adsorption capacity at 25 °C and vapor pressure of 90 mbar is as follows: 467 mg/g (NORIT-AC), 227 mg/g (AC-APS (1 M)), 388 mg/g (Norit-AC-HT), 492 mg/g (AC-HNO3), and 531 mg/g (AC-H2SO4).

KW - Adsorbents

KW - Adsorption

KW - Benzene

KW - Characterization

KW - Porous carbon

UR - http://www.scopus.com/inward/record.url?scp=85088944859&partnerID=8YFLogxK

U2 - 10.1007/s42823-020-00170-w

DO - 10.1007/s42823-020-00170-w

M3 - Article

AN - SCOPUS:85088944859

SN - 1976-4251

VL - 31

SP - 419

EP - 426

JO - Carbon Letters

JF - Carbon Letters

IS - 3

ER -

Surface functionalization methodologies on activated carbons and their benzene adsorption

Abstract

Keywords

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