Experimental

The acid loss into exhaust gases of the anode and cathode has been measured by condensing it in cold traps, as shown in Figure 1, and analyzing the amounts with ICP as a function of the operating conditions. The conditions studied are operating temperature, utilization of reactant gases or current density. Based on the amount of cumulated exhaust gasses and the weight of water condensed, the concentration of phosphoric acid in the exhaust gasses was calculated.

Fig. 1 An apparatus for acid loss measurement

Fig. 1 An apparatus for acid loss measurement

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