Peters, Lars, Rahmoun, Nouri-Said and Depmeier, Wulf (2012) A series of gallium-substituted 4CaO * 3Al(2)O(3)* 3H(2)O-cement phase analogues: X-ray powder diffraction and IR spectroscopy studies. European Journal of Mineralogy, 24 (1). pp. 39-46. DOI 10.1127/0935-1221/2011/0023-2152.

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Abstract

The solid solution series 4CaO·3Al2O3·3H2O - 4CaO·3Ga2O3·3H2O was synthesised by means of hydrothermal treatment. The products were characterised by X-ray powder diffraction and Fourier-transform infrared spectroscopy. No miscibility gaps were observed. All products are orthorhombic, having space group Aema. The main structural change due to the substitution of Ga for Al is an increase in the average T-O bond length and the lattice parameters. The coordination of Ca by oxygen is only slightly affected. The increase in the T-O bond lengths is compensated for by a decrease of the inter-tetrahedra angles, leading to an adaptation of the layer-geometry to the coordinational needs of Ca.

Document Type:	Article
Research affiliation:	Kiel University OceanRep > The Future Ocean - Cluster of Excellence
Refereed:	Yes
Open Access Journal?:	No
Publisher:	American Society for Microbiology
Projects:	Future Ocean
Date Deposited:	14 May 2014 09:43
Last Modified:	23 Sep 2019 20:03
URI:	https://oceanrep.geomar.de/id/eprint/24202

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