Abstract: A method of improving the performance of magnesium containing electrodes used in metal/air batteries (fuel cells), comprising the addition of one or more additives to the electrolyte or electrode surface. The additives are selected from any of the following groups; dithioburet, tin, and tin plus a quaternary ammonium salt.

Abstract: A method of improving the performance of magnesium containing electrodes used in metal/air batteries (fuel cells), comprising the addition of one or more additives to the electrolyte or electrode surface The additives are selected from any of the following groups; dithioburet, tin, and tin plus a quaternary ammonium salt.

Abstract: A chemical pulp which contains reactants capable of generating dioxirane within the pulp is produced in a process which comprises mixing a pulp with reactants comprising a carbonyl compound, preferably acetone, and an oxygen donor, preferably monoperoxysulfate, in proportions which produce a water-soluble dioxirane having a molecular diameter of less than 140 angstrom units. Such a pulp bleaching process which employs dioxirane as a bleaching agent is rendered environmentally and economically acceptable by recycling the reactants employed to produce the dioxirane.

Abstract: This invention relates to a process and apparatus for the electrosynthesis of oxygenated halogen salts of alkali metals such as alkali metal halate, alkali metal hypohalite and alkali metal perhalate and an alkaline solution of hydrogen peroxide in the same electrochemical reactor. The invention also relates to a method for oxygen depolarization of cathodes in reactors that are used for the electrosynthesis of oxygenated halogen salts of alkali metals. The invention also relates to a method for the electrosynthesis of oxygenated chlorine salts of alkali metals which avoids the need to use chromates that are used in conventional chlorate production for the suppression of the cathodic reduction of hypochlorite.

Abstract: An electrochemical reactor is provided with spaced apart anode and cathode monopolar electrodes. At least one bipolar electrode, and preferably a plurality of bipolar electrodes, are disposed between the monopolar electrodes. Each bipolar electrode has a plurality of openings therethrough occupying a suitable surface area thereof, such that gas disengagement from one side of the electrode is facilitated by passage of such gas through the openings therein to the other side of the electrodes. Such a cell is particularly useful in production of peroxide by electroreduction of oxygen. Such an arrangement allows relatively high superficial current densities to be used, as well as permitting use of gas impermeable separators (e.g. diaphragms or membranes) disposed adjacent the bipolar electrodes.

Abstract: A method of removing chloride ions in preference to oxidized sulfur ions, in particular sulfate or thiosulphate ions from a process solution containing either or both, or sulfide ions which are first oxidized to sulfate or thiosulphate ions. The method utilizes an electrochemical reactor having an anode and a cathode, disposed in respective anode and cathode compartments, separated by an ion selective separator, typically an anion exchange membrane. The process solution acts as the catholyte and is placed or flowed through the cathode chamber while simultaneously, an electrically conducting anolyte is placed or flowed through the anode chamber. A sufficient current density is maintained between the anode and the cathode, which at any time is not substantially greater than, and is preferably equal to, that which corresponds to the maximum chloride flux through the reactor membrane at the time.

Abstract: A lubricant applicator including a container having an outlet to be connected to the lubricating system of a bearing, a separator in the container movable to force lubricant out through said outlet, a gas chamber behind the separator and in communication with the container, a cathode and an anode in the chamber and forming part of an electrical circuit, a switch for breaking and making the circuit, and an electrolyte in contact with the anode and cathode for generating gas when electrical current flows through the circuit, the generated gas applying pressure to the separator to force lubricant out through the outlet.