Preparation and CO2 adsorption of amine modified Mg-Al LDH via exfoliation route


In response to the recent focus on reducing carbon dioxide emission, the preparation and characterization of organically functionalized materials for use in carbon capture have received considerable attention. In this paper the synthesis of amine modified layered double hydroxides (LDHs) via an exfoliation and grafting synthetic route is reported. The materials were characterized by elemental analysis (EA), powder x-ray diffraction (PXRD), diffuse reflectance infrared Fourier transform spectrometer (DRIFTS) and thermogravimetric analysis (TGA). Adsorption of carbon dioxide on modified layered double hydroxides was investigated by TGA at 25–80 °C. 3-[2-(2-Aminoethylamino) ethylamino]propyl-trimethoxysilane modified MgAl LDH showed a maximum CO2 adsorption capacity of 1.76 mmol g−1 at 80 °C. The influence of primary and secondary amines on carbon dioxide adsorption is discussed. The carbon dioxide adsorption isotherms presented were closely fitted to the Avrami kinetic model.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: © 2011 Elsevier Ltd. Open access under CC BY license.
Uncontrolled Keywords: adsorption,carbon dioxide,kinetics,layered double hydroxide,separation,surfactant
Publication ISSN: 1873-4405
Last Modified: 01 Jul 2024 07:11
Date Deposited: 31 Jan 2017 13:00
PURE Output Type: Article
Published Date: 2012-01-22
Published Online Date: 2011-10-12
Accepted Date: 2011-09-30
Submitted Date: 2011-03-31
Authors: Wang, Jiawei (ORCID Profile 0000-0001-5690-9107)
Stevens, Lee A.
Drage, Trevor C.
Wood, Joe



Version: Published Version

License: Creative Commons Attribution

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