Potentiality of photoelectron spectroscopy in the characterization of surface acidity: photoelectron and infrared spectroscopic comparative study of pyridine adsorption on NH4–Y zeolite activated at various temperatures
- 1 January 1976
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 72, 2565-2576
- https://doi.org/10.1039/f19767202565
Abstract
Pyridine adsorption on NH4–Y zeolites activated at temperatures ranging from 300 to 600°C has been followed by photoelectron spectroscopy (X.P.S.). A difference in binding energy of 2 eV is found between the N1s level of pyridine adsorbed respectively on Lewis and Brönsted acid sites; parallel infrared measurements support the assignments. Quantitative results are discussed in relation to i.r. absorption data and show that X.P.S. has potential applications in the quantitative determination of surface acidity.Keywords
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