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Issue 44, 2016
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Nanosized Na-EMT and Li-EMT zeolites: selective sorption of water and methanol studied by a combined IR and TG approach

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Abstract

Nanosized EMT-type zeolite crystals in sodium (Na-EMT) and ion-exchanged lithium (Li-EMT) forms were prepared. The sorption behavior of Li(Na)-EMT samples towards water, methanol and a mixture of both (50 : 50) was studied by combined thermogravimetric and infrared spectroscopic methods. The stability of the samples prior to and after the sorption measurements in two subsequent cycles was confirmed by X-ray diffraction, N2 sorption and NMR spectroscopy. The high sorption capacity of the Li-EMT sample towards water was demonstrated. It was found that the methanol is replaced by water faster in the Li-EMT sample in comparison to the Na-EMT sample. At low temperature, the methanol shows weak adsorption on each cationic site and no side products during desorption for both samples were obtained.

Graphical abstract: Nanosized Na-EMT and Li-EMT zeolites: selective sorption of water and methanol studied by a combined IR and TG approach

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Publication details

The article was received on 20 Aug 2016, accepted on 12 Oct 2016 and first published on 12 Oct 2016


Article type: Paper
DOI: 10.1039/C6CP05766G
Citation: Phys. Chem. Chem. Phys., 2016,18, 30585-30594
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    Nanosized Na-EMT and Li-EMT zeolites: selective sorption of water and methanol studied by a combined IR and TG approach

    H. Ali Ahmad, S. Thomas, P. Bazin, A. Vicente, C. Fernandez, H. Awala and S. Mintova, Phys. Chem. Chem. Phys., 2016, 18, 30585
    DOI: 10.1039/C6CP05766G

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