CO2 Adsorption on Activated Carbon/SBA-15 with TETA/TEPA Modification

Zhi Feng Lin; Jian Wen Wei

doi:10.4028/www.scientific.net/KEM.735.164

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 735CO2 Adsorption on Activated Carbon/SBA-15 with...

CO₂ Adsorption on Activated Carbon/SBA-15 with TETA/TEPA Modification

Abstract:

Activated carbon (AC), the KOH-modified activated carbon (KAC) and mesoporous material SBA-15 before and after pore expansion (SBA-15k) were modified using triethylenetetramine (TETA) and tetraethylenepentamine (TEPA) as modifiers. The CO₂ adsorption capacities of adsorbents were determined by thermogravimetric method. The results show that at 60 °C and the atmosphere of 15% CO₂ (volume fraction), with the increasing of amine loading amount, the CO₂ adsorption capacities of AC and KAC decreased gradually. While those of SBA-15 and SBA-15k increase at first stage and decrease subsequently. Cyclic CO₂ adsorption capacities and mass of the adsorbents show no obvious changes, so the adsorbents have excellent stability.

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Periodical:

Key Engineering Materials (Volume 735)

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164-167

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.735.164

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Online since:

May 2017

Authors:

Zhi Feng Lin, Jian Wen Wei*

Keywords:

Activated Carbon, Modification, SBA-15, TEPA, TETA

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