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Structural changes in phenol-intercalated hydrotalcite caused by heating

J. Cornejo, R. Celis, I. Pavlovic, M. A. Ulibarri and M. C. Hermosin
Structural changes in phenol-intercalated hydrotalcite caused by heating
Clay Minerals (December 2000) 35 (5): 771-779

Abstract

Thermal analysis (DTA-TG-DTG), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, nitrogen adsorption and mercury intrusion porosimetry techniques were used to assess the structural changes induced upon heating of two hydrotalcite-phenol (trichloro-and trinitrophenol, HT-TCP and HT-TNP) complexes, and the results were compared with those obtained for the original hydrotalcite (HT) sample. The DTA revealed thermal effects that depended on the nature of the interlayer ion in the complexes. The total weight loss (TG-DTA) increased from 37% for the original HT to 40% for HT-TCP and 77% HT-TNP, as the amount of phenol increased. The XRD and FTIR spectroscopy showed that the calcination product (550 degrees C) of the HT-phenol complexes was indistinguishable from that formed from the original HT. Since HT-phenol complexes were prepared by phenol adsorption on calcined HT, our results confirm the recyclability of HT-like compounds as sorbents for phenols.


ISSN: 0009-8558
EISSN: 1471-8030
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 35
Serial Issue: 5
Title: Structural changes in phenol-intercalated hydrotalcite caused by heating
Affiliation: Consejo Superior de Investigaciones Cientificas, Instituto de Recursos Naturales y Agrobiologia de Sevilla, Seville, Spain
Pages: 771-779
Published: 200012
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 22
Accession Number: 2002-025249
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: Universidad de Cordoba, ESP, Spain
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200210
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