Issue 5, 1989

Infrared spectroscopic studies on carbon dioxide adsorption in alkali-metal and alkaline-earth-metal ion-exchanged A-type zeolites. Part 1.—General features of CO2 interaction with A-type zeolites

Abstract

The influence of different alkali-metal and alkaline-earth-metal ions on the formation of physisorbed and chemisorbed carbon dioxide in A-type zeolites has been studied by F.t.i.r. spectroscopy. Various species of both kinds can be distinguished, the mutual correlations of which are determined by the exchange cation. In the case of physisorbed CO2 the ν2 band and the 2ν2/ν1 Fermi diads, which become i.r. active upon adsorption, can be observed, and possible sites and geometries of the sorption complex are discussed. Compared to X- and Y-type zeolites the ν3 frequency shift shows a poorer correlation with the charge:radius ratio of the cation, so rendering the detection of sorption sites difficult. The general loss of rotational fine structure points to a strong hindrance to rotation. Satellite bands of the ν3 fundamental band are tentatively assigned to external motions.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans. 1, 1989,85, 1149-1158

Infrared spectroscopic studies on carbon dioxide adsorption in alkali-metal and alkaline-earth-metal ion-exchanged A-type zeolites. Part 1.—General features of CO2 interaction with A-type zeolites

H. Förster and M. Schumann, J. Chem. Soc., Faraday Trans. 1, 1989, 85, 1149 DOI: 10.1039/F19898501149

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