| 摘要 |
PURPOSE: A preparation method of onium hydroxides in an electrochemical cell is provided, by which onium hydroxides are obtained from an onium salt and the onium hydroxides can be separated from the electrochemical cell. CONSTITUTION: Onium hydroxides are electrochemically prepared by (A) providing a cell comprising an anode (11), a cathode (12) and one or more unit cells between the anode and the cathode, each unit cell comprising: four compartments defined by, in sequence beginning at the anode, a bipolar membrane (13), a first divider (14) and a second divider (15), the bipolar membrane having an anion selective side facing the anode and a cation selective side facing the cathode; (B) charging a solution of an onium salt to the compartment in each unit cell formed by the first and second dividers; (C) passing a current through the cell to produce an onium hydroxide in the compartment in each unit cell formed by one of the dividers on the anode side and a bipolar membrane on the cathode side; and (D) recovering the onium hydroxide.
|
