A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydrothermal synthesis of dioctahedral smectites: The Al–Fe3+ chemical series. Part II: Crystal-chemistry
Abstract The crystal-chemistry of a series of synthetic Al–Fe3+ smectites was studied in detail using near and mid infrared spectroscopy. Chemical and NIR data indicated a quite complete range of octahedral Al for Fe3+ substitution, and therefore, the solid-solution between beidellite and nontronite end-members was continuous and complete. The wavenumbers of several infrared absorption bands were correlated with the chemistry of the synthetic smectites, providing a useful tool to constrain their structural formulae and also for assisting in assignments of similar bands in natural smectites. The Al and Fe3+ cations were shown to be randomly distributed in the octahedral sheet of synthesized smectites. Despite the high availability of iron during synthesis, generally only a small amount of tetrahedral Fe3+ was observed.
Highlights Chemistry of the synthesized smectites Crystallography of the synthesized smectites Crystal chemistry of Al and Fe3+ smectites Applications to other smectites
Hydrothermal synthesis of dioctahedral smectites: The Al–Fe3+ chemical series. Part II: Crystal-chemistry
Abstract The crystal-chemistry of a series of synthetic Al–Fe3+ smectites was studied in detail using near and mid infrared spectroscopy. Chemical and NIR data indicated a quite complete range of octahedral Al for Fe3+ substitution, and therefore, the solid-solution between beidellite and nontronite end-members was continuous and complete. The wavenumbers of several infrared absorption bands were correlated with the chemistry of the synthetic smectites, providing a useful tool to constrain their structural formulae and also for assisting in assignments of similar bands in natural smectites. The Al and Fe3+ cations were shown to be randomly distributed in the octahedral sheet of synthesized smectites. Despite the high availability of iron during synthesis, generally only a small amount of tetrahedral Fe3+ was observed.
Highlights Chemistry of the synthesized smectites Crystallography of the synthesized smectites Crystal chemistry of Al and Fe3+ smectites Applications to other smectites
Hydrothermal synthesis of dioctahedral smectites: The Al–Fe3+ chemical series. Part II: Crystal-chemistry
Petit, S. (author) / Decarreau, A. (author) / Gates, W. (author) / Andrieux, P. (author) / Grauby, O. (author)
Applied Clay Science ; 104 ; 96-105
2014-11-05
10 pages
Article (Journal)
Electronic Resource
English
Hydrothermal synthesis of dioctahedral smectites: The Al–Fe3+ chemical series
| Online Contents | 2010
Hydrothermal synthesis and characterization of dioctahedral smectites: A montmorillonites series
| Online Contents | 2008