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Amine functionalized activated carbon fibers as effective structured adsorbents for formaldehyde removal.

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Title: Amine functionalized activated carbon fibers as effective structured adsorbents for formaldehyde removal.
Authors: Baur, Guillaume B.1, Spring, Jonathan1, Kiwi-Minsker, Lioubov1,2 lioubov.kiwi-minsker@epfl.ch
Source: Adsorption. Nov2018, Vol. 24 Issue 8, p725-732. 8p.
Abstract: Activated carbon fibers (ACFs) with surface modified by a diethylene triamine (DETA) are synthesized for the abatement of formaldehyde in gas phase at low concentration. Adsorbents with several DETA loadings were tested and characterized. The amount of DETA deposited on the ACFs surface is shown to diminish the porosity. The influence of the DETA on the adsorption capacity towards formaldehyde is studied via dynamic adsorption experiments. The deposition of 20 wt.% DETA allowed ~ 100-fold increase of adsorption capacity as compared to original ACFs. A Schiff base reaction between the amine groups of DETA and formaldehyde was suggested as the adsorption mechanism. Adsorbent surface chemistry was shown to be more important than its microporous structure for efficient formaldehyde removal. [ABSTRACT FROM AUTHOR]
Copyright of Adsorption is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Activated carbon fibers (ACFs) with surface modified by a diethylene triamine (DETA) are synthesized for the abatement of formaldehyde in gas phase at low concentration. Adsorbents with several DETA loadings were tested and characterized. The amount of DETA deposited on the ACFs surface is shown to diminish the porosity. The influence of the DETA on the adsorption capacity towards formaldehyde is studied via dynamic adsorption experiments. The deposition of 20 wt.% DETA allowed ~ 100-fold increase of adsorption capacity as compared to original ACFs. A Schiff base reaction between the amine groups of DETA and formaldehyde was suggested as the adsorption mechanism. Adsorbent surface chemistry was shown to be more important than its microporous structure for efficient formaldehyde removal. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Adsorption is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Nov2018
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