Issue 3, 1995

IR spectroscopy of hydrotreating catalysts

Abstract

A correlation between IR spectra and catalyst activity has been investigated via in situ diffuse reflectance IR spectroscopy of probe molecules, adsorbed onto hydrotreating catalysts. This technique allows very high quality spectra to be obtained with minimal sample preparation. The use of an in situ cell has allowed the detection of CO physisorbed on Al3+ and weakly chemisorbed on reduced Co and Mo sites. Chemisorbed NO was shown to be desorbed readily in a vacuum; this occurs to a greater extent from the Co sites than the Mo sites. A comparison of the measured catalyst performance with the ratio of the Co to Mo nitrosyl bands suggests that the method is not sufficiently sensitive to distinguish between the small differences in activity that are commercially important.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans., 1995,91, 517-524

IR spectroscopy of hydrotreating catalysts

S. F. Parker, A. Amorelli, Y. D. Amos, C. Hughes, N. Porter and J. R. Walton, J. Chem. Soc., Faraday Trans., 1995, 91, 517 DOI: 10.1039/FT9959100517

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements