Modification of activated carbon using nitration followed by reduction for carbon dioxide capture

Modification of activated carbon using nitration followed by reduction for carbon dioxide capture

Activated carbon (AC) samples were modified using nitration followed by reduction to enhance their CO<inf>2</inf>adsorption capacities. Besides characterization of the samples, investigation of CO<inf>2</inf> capture performance was conducted by CO<inf>2</inf> iso...

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Bibliographic Details
Main Authors: Shafeeyan, M.S., Houshmand, A., Arami-Niya, Arash, Razaghizadeh, H., Daud, W.M.A.W.
Format: Journal Article
Language:English
Published: WILEY-V C H VERLAG GMBH 2015
Subjects:
Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
Activated carbon
Surface modification
Anchoring
Amino groups
Nitration
TEMPERATURE-PROGRAMMED DESORPTION
CO2 CAPTURE
SURFACE-CHEMISTRY
POTENTIOMETRIC TITRATIONS
GAS REMOVAL
ADSORPTION
AMINE
SORBENTS
ADSORBENTS
WATER
Online Access:http://hdl.handle.net/20.500.11937/78463
Description
Summary:Activated carbon (AC) samples were modified using nitration followed by reduction to enhance their CO<inf>2</inf>adsorption capacities. Besides characterization of the samples, investigation of CO<inf>2</inf> capture performance was conducted by CO<inf>2</inf> isothermal adsorption, temperature-programmed (TP) CO<inf>2</inf> adsorption, cyclic CO<inf>2</inf>adsorption-desorption, and dynamic CO<inf>2</inf> adsorption tests. Almost all modified samples showed a rise in the amount of CO<inf>2</inf> adsorbed when the comparison is made in unit surface area. On the other hand, some of the samples displayed a capacity superior to that of the parent material when compared in mass unit, especially at elevated temperatures. Despite ∼65% decrease in the surface area, TP-CO<inf>2</inf> adsorption of the best samples exhibited increases of ∼10 and 70% in CO<inf>2</inf> capture capacity at 30 and 100°C, respectively.

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