An infrared spectroscopic comparison of four Chinese palygorskites

Liu, Qinfu, Yao, Xiang, Cheng, Hongfei, & Frost, Ray L. (2012) An infrared spectroscopic comparison of four Chinese palygorskites. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 96, pp. 784-789.

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Infrared spectroscopy has been used to characterize and compare four palygorskite mineral samples from China. The position of the main bands identified by infrared spectra is similar, but there are some differences in intensity, which are significant. In addition, several additional bands are observed in the spectra of palygorskite and their impurities. This variability is attributed to differences in the geological environment, such as the degree of weathering and the extent of transportation of the minerals during formation or deposition, and the impurity content in these palygorskites. The bands of water and hydroxyl groups in these spectra of palygorskite samples have been studied. The characteristic band of palygorskite is observed at 1195 cm�1. Another four bands observed at 3480, 3380, 3266 and 3190 cm�1 are attributed to the water molecules in the palygorskite structure. These results suggest that the infrared spectra of palygorskites mineral from different regions are decided not only by the main physicochemical properties of palygorskite, but also by the amount and kind of impurities.

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ID Code: 58146
Item Type: Journal Article
Refereed: Yes
Additional Information: PDF is password protected - no cover sheet possible.
Keywords: Infrared spectroscopy, Sepiolite, Palygorskite, Carbonate, Clay
DOI: 10.1016/j.saa.2012.07.025
ISSN: 13861425
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: � 2012 Elsevier B.V. All rights reserved
Deposited On: 13 Mar 2013 01:14
Last Modified: 13 Mar 2013 01:20

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