On the destruction of kaolinite and gibbsite by phenylphosphonic, phenylphosphinic and phenylarsonic acids: evidence for the formation of new Al compounds.

Gardolinski, Jefc, Lagaly, G. and Czank, M. (2004) On the destruction of kaolinite and gibbsite by phenylphosphonic, phenylphosphinic and phenylarsonic acids: evidence for the formation of new Al compounds. Clay Minerals, 39 (4). pp. 391-404. DOI 10.1180/0009855043940142.

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Abstract

Kaolinite and synthetic gamma-Al(OH)(3) (gibbsite or hydrargillite) were reacted with phenylphosphonic, phenylphosphinic and 2-nitrophenol-4-arsonic acids. The products were studied by powder X-ray diffraction, transmission electron inicroscopy/selected area electron diffraction/energy dispersive X-ray/Fourier transform infrared and simultaneous thermogravimetric/differential thermal analysis. The acids were not intercalated but, instead, easily destroyed the structure of the minerals. Lamellar Al phenylphosphonate and aluminium phenylphosphinate and phenylarsonate with polymeric linear-chain structures were formed from kaolinite. The reaction between gibbsite and the same acids yielded almost identical products. No evidence of formation of grafted kaolinite derivatives after the reaction with pherylphosphonic acid was found.

Document Type: Article
Keywords: aluminium gibbsite grafting kaolinite phenylarsonate phenylphosphinate phenylphosphonate interlamellar aluminol surface 10-a hydrated kaolinite structural-characterization hydrothermal synthesis vibrational-spectra interlayer surface crystal-structures methoxy groups spectroscopy intercalation
Research affiliation: Kiel University
DOI etc.: 10.1180/0009855043940142
ISSN: 0009-8558
Date Deposited: 24 Jan 2012 07:02
Last Modified: 08 Oct 2012 10:32
URI: http://oceanrep.geomar.de/id/eprint/16122

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