The Raman spectrum of kaolinite #9 at 21°C

80Citations
Citations of this article
67Readers
Mendeley users who have this article in their library.

Abstract

The Raman spectrum of kaolinite #9, a layer silicate of composition Al 2Si2O5(OH)4 from Mesa Alta, New Mexico, USA, is reported and compared to previously published Raman and infrared spectra, as well as calculated lattice vibration frequencies, of other kaolinite samples. In the OH stretching region, a Raman band is observed at 3684 cm-1, a frequency which is generally unknown in infrared spectra of kaolinite. The two most likely origins of this band are (a) uncoupled inner-surface hydroxyl stretching, and (b) transverse/longitudinal splitting involving the 3695 cm-1 band, which occurs in both Raman and infrared spectra of kaolinite. The existing data do not conclusively show which of these explanations is correct. In the lattice vibration region, most of the observed Raman bands of kaolinite #9 have been tentatively assigned by comparison with published frequency calculations and existing assignments of infrared spectra of various kaolinites. The descriptions of many of the vibrational modes are approximate, partly because extensive mixing of vibrations makes a simple description of them impossible.

Cite

CITATION STYLE

APA

Michaelian, K. H. (1986). The Raman spectrum of kaolinite #9 at 21°C. Canadian Journal of Chemistry, 64(2), 285–294. https://doi.org/10.1139/v86-048

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free