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Issue 32, 2013
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Probing the surface of nanosheet H-ZSM-5 with FTIR spectroscopy

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Abstract

Herein we report FTIR in situ adsorption of molecular hydrogen, carbon monoxide, water, methanol, pyridine and 2,4,6-trimethylpyridine (collidine) on nanosheet H-ZSM-5 which was recently studied in the methanol to hydrocarbons (MTH) reaction. The nature of the hydroxyl groups and surface species are described in detail. The IR spectrum of nanosheet H-ZSM-5 is dominated by silanols, which saturate the external surfaces. The acidity of Si(OH)Al is comparable to that observed in the case of standard microcrystalline H-ZSM-5. The study of the external surface allows the recognition of Si(OH)Al species located at the channel entrance, which are mostly all accessible to hindered molecules such as collidine.

Graphical abstract: Probing the surface of nanosheet H-ZSM-5 with FTIR spectroscopy

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Publication details

The article was received on 26 Mar 2013, accepted on 02 Jul 2013 and first published on 02 Jul 2013


Article type: Paper
DOI: 10.1039/C3CP51280K
Citation: Phys. Chem. Chem. Phys., 2013,15, 13363-13370
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    Probing the surface of nanosheet H-ZSM-5 with FTIR spectroscopy

    B. Lønstad Bleken, L. Mino, F. Giordanino, P. Beato, S. Svelle, K. P. Lillerud and S. Bordiga, Phys. Chem. Chem. Phys., 2013, 15, 13363
    DOI: 10.1039/C3CP51280K

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