High pressure studies on molten zinc chloride

High temperature–high pressure apparatus for neutron diffraction on molten salts: Structure factors of molten zinc chloride

“…Allen et al 11,12 presented the total atom pair correlation functions of zinc chloride at 603 K and 903 K. Badyal and Howe 13 determined the total atom pair correlation function of zinc chloride at 723 K. Recently, we presented high energy photon diffraction measurements on zinc chloride in the temperature range 623-853 K 15 and experiments on molten zinc chloride at 723 and 773 K and pressures up to 3000 bar. 16 All investigations agree with the fact that zinc is tetrahedrally coordinated by chloride in the investigated temperature and pressure range. In this paper we present the first neutron diffraction investigations on zinc chloride at high pressures.…”

X-ray diffraction studies on molten zinc bromide at high pressure

“…In our previous investigation on molten zinc chloride under high pressure and high temperature, a similar dependence of the intensity of the prepeak from the pressure was found [8]. We interpreted this effect as a degradation of the polymer like network, consisting of tetrahedral zinc chloride species.…”

“…A more detailed overview can be found in our paper on zinc chloride [8] and in other publications [14][15][16].…”

“…The data reduction and evaluation follows the procedure, described in [8]. The scattering intensities were corrected for the deadtime of the detector and normalized to the primary beam intensity, followed by the corrections for polarization, geometry and absorption.…”

“…In previous publications we presented X-ray and neutron studies on molten zinc chloride in a pressure range between 1 bar and 4000 bar at temperatures between 450°C and 500°C [7,8]. We observed a reduction of the intensity of the first sharp diffraction peak (prepeak) of the distinct part with increasing pressure and we concluded, that this behaviour indicates a network breaking tendency of the corner shared [ZnCl 4 ] 2À tetrahedra with increasing pressure, while the tetrahedra themselves remain unchanged over the whole applied pressure and temperature range.…”