Abstract
IR spectra of surface species and of CO adsorption at ∼77 and ∼300 K on pure ZrO 2, sulfated ZrO 2, sulfated/calcined ZrO 2 have been obtained and related to the catalytic activity of these systems in the isomerization of n-butane. Spectral data indicated that: (i) the catalytic activity, when present, requires the presence of both Brønsted and Lewis surface acidity; (ii) a catalyst calcination step is necessary for the elimination of sulfates from crystal defects, on which strong Lewis acid sites must form; (iii) strong Lewis acid sites actually involved in the catalytic process represent a small yet strongest fraction of all Lewis sites formed on the catalyst upon thermal activation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
