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HCl adsorption on copper-modified ZSM-5: FTIR and DFT study
Journal article   Peer reviewed

HCl adsorption on copper-modified ZSM-5: FTIR and DFT study

S. Mosallanejad, B.Z. Dlugogorski, E.M. Kennedy and M. Stockenhuber
The Journal of Physical Chemistry C, Vol.117(38), pp.19365-19372
2013
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Abstract

The adsorption complex of hydrogen chloride on copper-modified ZSM-5 was studied by FTIR and theoretical calculations. The results indicate that the Cl atom of hydrogen chloride is bound to the Cu cations when adsorbed at low pressures (<1 μbar). At higher pressures, HCl adsorbs on the zeolite Brønsted acid sites as well as is hydrogen bonded to the Cu in a larger cluster. Using in situ infrared spectroscopy, we observed a sharp decrease in stretching vibrational frequency of HCl of about 700 cm-1 compared with the H-Cl stretching vibration of gaseous hydrochloric acid. The findings were supported by density functional theory cluster quantum chemical calculations.

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Citation topics
2 Chemistry
2.41 Catalysts
2.41.366 Selective Catalytic Reduction
Web Of Science research areas
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
ESI research areas
Chemistry
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