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Synthesis, Characterization, and Reactivity of Feitknechtite

Published online by Cambridge University Press:  10 February 2011

J. Luo ,
S. R. Segal ,
J. Y. Wang ,
Z. R. Tian  and
S. L. Suib
J. Luo
Affiliation:
U-60, Department of Chemistry, University of Connecticut Storrs, CT 06269–4060, [email protected]
S. R. Segal
Affiliation:
U-60, Department of Chemistry, University of Connecticut Storrs, CT 06269–4060, [email protected]
J. Y. Wang
Affiliation:
U-60, Department of Chemistry, University of Connecticut Storrs, CT 06269–4060, [email protected]
Z. R. Tian
Affiliation:
U-60, Department of Chemistry, University of Connecticut Storrs, CT 06269–4060, [email protected]
S. L. Suib
Affiliation:
U-60, Department of Chemistry, University of Connecticut Storrs, CT 06269–4060, [email protected] Department of Chemical Engineering and Institute of Materials Science
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Abstract

The synthesis of Mg2+ doped β-MnOOH which is known as feitknechtite is reported. Feitknechtite is a layered material having the Cd12 structure. The characterization of Mg2+ doped feitknechtite was done with X-ray powder diffraction, elemental analysis, energy dispersive X-ray analysis, scanning electron microscopy, alternating current (AC) impedance, Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, average oxidation state titrations of manganese, and acidity measurements. The formation of feitknechtite is related to the MnO4−/Mn2+ ratio used in the synthesis. Feitknechtite can be converted to synthetic birnessite or octahedral layer birnessite (OL-1) which is a precursor to the 6.9 Å tunnel structure material todorokite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 3
Copyright
Copyright © Materials Research Society 1996

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