Abstract

Among a number of techniques used for the research of heterogeneous (gas-solid) catalysis, transmission infrared spectroscopy is one of the most widely used techniques for the characterization of surface species adsorbed on the catalyst. It offers useful information, particularly when the spectroscopy is carried out under reaction conditions. Various types of infrared cell have been designed so that the spectra of adsorbed species can be obtained during reactions at high temperatures. Most of them, however, have been used at atmospheric or reduced pressure, and less attention has been paid to high-pressure operations. Also one usually requires an efficient flow of gas in the cell in order to follow the kinetic behavior of the surface species.

Infrared emission spectra from a heterogeneous catalyst system in reaction conditions. 1: Description of the microreactor assembly

P. C. M. van Woerkom, P. Blok, H. J. van Veenendaal, and R. L. de Groot
Appl. Opt. 19(15) 2546-2550 (1980)

Absorption by Infrared Bands of Carbon Dioxide Gas at Elevated Pressures and Temperatures*

D. K. Edwards
J. Opt. Soc. Am. 50(6) 617-626 (1960)

Infrared emission spectra from a heterogeneous catalyst system in reaction conditions. 2: Infrared spectroscopic aspects

P. C. M. van Woerkom and R. L. de Groot
Appl. Opt. 21(17) 3114-3118 (1982)

Apparatus for the Determination of the Band Absorption of Gases at Elevated Pressures and Temperatures

J. T. Bevans, R. V. Dunkle, D. K. Edwards, J. T. Gier, L. L. Levenson, and A. K. Oppenheim
J. Opt. Soc. Am. 50(2) 130-136 (1960)

Quantum-cascade-laser-absorption-spectroscopy diagnostic for temperature, pressure, and NO X ² Π _1/2 at 500 kHz in shock-heated air at elevated pressures

Jonathan J. Gilvey, Morgan D. Ruesch, Kyle A. Daniel, Charley R. Downing, Kyle P. Lynch, Justin L. Wagner, and Christopher S. Goldenstein
Appl. Opt. 62(6) A12-A24 (2023)