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Evaluation of talc morphology using FTIR and H/D substitution

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Abstract:

Deuteration (H/D substitution at 200ÂșC) was performed on powders of two ground talcs of different particle shapes (different basal/lateral surface ratios). Results indicate that the deuteration process is only efficient on lateral talc surfaces, and suggest that the hydrogens located in the hexagonal ring of the talc basal surfaces are not exchanged. The FTIR spectra collected from the two talc samples show that it is possible to discriminate between particles with the same specific surface area but with different basal/lateral surface ratios using the deuteration process.

Keywords: DEUTERATION; FTIR; PARTICLE MORPHOLOGY; TALC

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/0009855033820084

Publication date: June 1, 2003

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