ELECTROLYTIC CELL FOR PREPARATION OF HYDROGEN PEROXIDE AND METHOD FOR PRODUCING HYDROGEN PEROXIDE

摘要

PROBLEM TO BE SOLVED: To provide an electrolytic cell which prevents metal deposition to an anode surface and prepares a hydrogen peroxide at an adequate current density and an electrolytic method. SOLUTION: Polyvalent method ions are removed by an apparatus 10 for removing the polyvalent metal ions and dissolving a low-concentration salt and the raw material water prepared by dissolving the univalent metal salt, such as sodium sulfate, at a prescribed concentration is supplied to the electrolytic cell 1. Since the polyvalent metal ions do not exist in the electrolyte in spite of continuation of the electrolysis and therefore there is substantially no deposition of the hydroxide and carbonate to the cathode and the sufficient current density is assured by the dissolved salt. The stable preparation of the hydrogen peroxide for a long period is thus made possible without the exertion of an excessive burden on the electrodes, etc.