An in situ energy-dispersive x-ray diffraction study of the hydrothermal crystallization of zeolite A. 1. Influence of reaction conditions and transformation into sodalite

Article Abstract:

The hydrothermal crystallization of sodium zeolite A from amorphous aluminosilsicate gels at 80-120 degree Celsius is investigated via a time-resolved in situ energy-dispersive X-ray diffraction. The course of crystallization reaction is analyzed by quantifying the Avarami-Erofe'ev nucleation growth curves, which indicate that choice of silica starting material affect the course of reaction, and the concentration of NaOH and temperature determine the crystallization behavior.

Author: Catlow, C. Richard A., Walton, Richard I., Millange, Franck, O'Hare, Dermot, Davies, Andrew T., Sankar, Gopinathan
Confraternities

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An in situ energy-dispersive x-ray diffraction study of the hydrothermal crystallization of zeolite A. 1. Influence of reaction conditions and transformation into sodalite

Article Abstract:

The hydrothermal crystallization of sodium zeolite A from amorphous aluminosilsicate gels at 80-120 degree Celsius is investigated via a time-resolved in situ energy-dispersive X-ray diffraction. The course of crystallization reaction is analyzed by quantifying the Avarami-Erofe'ev nucleation growth curves, which indicate that choice of silica starting material affect the course of reaction, and the concentration of NaOH and temperature determine the crystallization behavior.

Author: Catlow, C. Richard A., Walton, Richard I., Millange, Franck, O'Hare, Dermot, Davies, Andrew T., Sankar, Gopinathan
Potassium & Sodium Compounds, Sodium & Sodium Compounds, X-rays, Thermal properties, Sodium compounds

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An in situ energy-dispersive X-ray diffraction study of the hydrothermal crystallization of zeolite A. 2. Effect of deuteration of crystallization kinetics

Article Abstract:

The crystallization of zeolite A from amorphous aluminosilicate gels at 10 degrees Celsius is examined by energy-dispersive X-ray diffraction. The effect of deuteration of reagents on the kinetics of a zeolite crystallization is described and the finings are discussed in relation to previously postulated zeolite crystallization mechanisms.

Author: Walton, Richard I., O'Hare Dermot
Aluminum Silicate, Aluminum silicates

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Subjects list: Methods, Usage, X-ray diffraction, Zeolites, Crystallization, Chemical properties
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