Diffuse Reflectance FT-IR Studies At Elevated Temperatures

S. L. Hill; K. Krishnan; H. Matsumoto

doi:10.1117/12.970745

20 December 1985 Diffuse Reflectance FT-IR Studies At Elevated Temperatures

S. L. Hill, K. Krishnan, H. Matsumoto

Proceedings Volume 0553, Fourier and Computerized Infrared Spectroscopy; (1985) https://doi.org/10.1117/12.970745
Event: 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, 1985, Ottawa, Canada

Abstract

The study of gas-solid interactions is of much importance for the understanding of the mechanisms of catalytic reactions. Such systems have traditionally been studied by flowing a gas of interest through a heatable, evacuable chamber containing a thin, free-standing pressed pellet of a solid (1). The preparation of so thin a pellet can be rather time-consuming. FT-IR Diffuse Reflectance (DR) is a popular technique for the study of solids (2-4). Little, if any, sample preparation is required and powdered catalysts may directly be analyzed. The evacuable, heatable chamber allows a sample to be studied at any temperature in a specific environment. When compared to the pellet technique, DR has the advantage of a larger sample surface area and, hence, more sites for interaction. The small optical path within the chamber minimizes potential spectral interference by the gas during the gas-solid experiment.

Citation Download Citation

S. L. Hill, K. Krishnan, and H. Matsumoto "Diffuse Reflectance FT-IR Studies At Elevated Temperatures", Proc. SPIE 0553, Fourier and Computerized Infrared Spectroscopy, (20 December 1985); https://doi.org/10.1117/12.970745

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