Open AccessA new cell for temperature‐dependent X‐ray absorption spectroscopy of liquid solutions: application to PbBr 2 solutions in diethylene glycol
Author(s) -
LützenkirchenHecht D.,
Oldag T.,
Keil P.,
Keller H.L.,
Frahm R.
Publication year - 2005
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049504030729
Subject(s) - diethylene glycol , absorption spectroscopy , absorption (acoustics) , spectroscopy , analytical chemistry (journal) , chemistry , x ray spectroscopy , materials science , x ray , ethylene glycol , optics , chromatography , physics , organic chemistry , quantum mechanics , composite material
An in situ cell has been constructed for temperature‐dependent X‐ray absorption experiments (EXAFS and XANES) of lead bromine (PbBr 2 ) solutions in diethylene glycol in the temperature range from room temperature up to about 433 K. The solution is kept in a thermostated container made of carbon‐reinforced teflon between two thin chemically inert quartz glass windows with a high transmission for hard X‐rays. The construction of the cell ensures that these X‐ray windows are thermalized so that any possible precipitation of solid products from the solution is inhibited. The cell consists mainly of two hermetically sealed teflon containers for the thermostating fluid (silicon oil) that were fitted together in such a way that a small and variable volume (∼2–4 cm 3 ) for the liquid under investigation was achieved. A small thermocouple in a glass enclosure was placed in the solution to maintain temperature control and feedback to the thermostat. The cell design and its performance for temperature‐dependent in situ investigations with X‐rays are reported. Some preliminary results obtained for PbBr 2 solutions in diethylene glycol are given.