Determination of Reduced Titanium Chlorides in Fused Salt Melts

Abstract

unsuccessful. Only single inflections were observed. This indicates the differences in the magnitude of maximum AE/AV probably represent minor differences in actual base strength. DISCUSSIONSulfides and sulfones, possible impurities in sulfoxides, in general exhibit no measurable basicity in acetic anhydride when titrated with perchloric acid.Trimethylphosphine oxide, though not a sulfoxide, has been included for comparison as amine oxides have been found to exhibit very sharp inflections in acetic anhydride. Diethoxy sulfoxide (diethyl sulfite) could not be titrated as a base in acetic anhydride.The direct titration of sulfoxides in acetic anhydride offers a rapid and reproducible approach to purity determination. The method appears to be limited only by the solubility of the particular sulfoxide in acetic anhydride.

Quantitative Analysis of Titanium Ions in the Equilibrium with Metallic Titanium in NaCl-KCl Equimolar Molten Salt

“…The concentrations of Ti 2þ and Ti 3þ and the amount of dispersed Ti, which are represented as C Ti 2þ , C Ti 3þ and n Ti , respectively, were evaluated based on the method proposed by Mellgren et al 11,12) The quantitative analysis combining three steps, two H 2 gas evolution methods and a titration method by Fe 3þ , was carried out. First, Ti 2þ was quantitated by H 2 evolution method.…”

“…Here, the concentration quotient, K c , is defined by the following equation, Figure 3 shows the relationship between K c and x Ti 2þ , together with the reported values. [11][12][13][14] The values seem to be independent on the kind of container. The reason is that the surface of the container might be covered by metallic titanium or titanium alloy in their experiments.…”

“…But, they used the oxide glass containers, which could react with metallic titanium or divalent titanium ion. [11][12][13][14] On the other hand, Komarek and Herasymenko conducted the equilibrium experiments using a metallic container in equilibrium with Ti. They concluded that Ti 3þ did not exist in molten NaCl and molten MgCl 2 .…”