STUDY OF THE GENERAL PROPERTIES OF SOME MINERAL ION EXCHANGE MEMBRANES AS WELL AS THEIR POSSIBLE USE IN LOW TEMPERATURE FUEL CELLS.
Abstract
The purpose of this exploratory research was to examine the possibilities of using some mineral ion exchangers as electrolytes in a low temperature fuel cell. The ion exchangers considered belonged to the family of phosphates of heavy metals such as tin, titanium, niobium and germanium. The following points were examined in detail: physico-chemical properties of the phosphates; exchange properties; solubilities; densities; thermodifferential analysis of the metal phosphates. It appears that tin and titanium phosphates are difunctional exchangers with exchange capacities of 6 to 8 milli-equivalents per gram of exchanger at pH 6. These values are comparable to corresponding values for organic ion exchange resins. A model for the exchange mechanism of difunctional exchangers is also proposed. The principle of the model is that the two exchange functions of the difunctional exchanger take part in the exchange one after the other. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1963
- Accession Number
- AD0433803