Spectrophotometric study of closed-tube chemical transport of vanadium oxides with TeCl4

The in situ observations of the gaseous species in the closed-tube chemical transport systems, V2O3–TeCl4, V5O9–TeCl4, VO2–TeCl4, V6O13–TeCl4, and V2O5–TeCl4 were made by using an UV and VIS spectrophotometer which was improved for the high-temperature measurements. The measurements showed that a great majority of gaseous species in the transport tube is VOCl3 for all the systems, which is in agreement with the earlier result of the mass spectrometry on the VO2–TeCl4 system.