Chemical systems and methods for operating an electrochemical cell with an acidic anolyte
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United States of America Patent
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Apr 4, 2017
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Oct 5, 2011
filing date -
Oct 7, 2010
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Abstract
An electrochemical cell having a cation-conductive ceramic membrane and an acidic anolyte. Generally, the cell includes an anolyte compartment and a catholyte compartment that are separated by a cation-conductive membrane. A diffusion barrier is disposed in the anolyte compartment between the membrane and an anode. In some cases, a catholyte is channeled into a space between the barrier and the membrane. In other cases, a chemical that maintains an acceptably high pH adjacent the membrane is channeled between the barrier and the membrane. In still other cases, some of the catholyte is channeled between the barrier and the membrane while another portion of the catholyte is channeled between the barrier and the anode. In each case, the barrier and the chemicals channeled between the barrier and the membrane help maintain the pH of the liquid contacting the anolyte side of the membrane at an acceptably high level.
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