Abstract: Direct D.C. electrical coupling between a fuel cell and an electrolysis cell is achieved without use of any other electrical power or storage source by use of an oxidant partial pressure control system. This system is based on comparison of the desired fuel cell output voltage with the actual voltage output of the fuel cell and adjusting the partial pressure accordingly.

Abstract: The invention is a monopolar electrochemical cell assembly of the type having two end members and at least one electrode unit positioned between said end members, said unit at least having:two substantially parallel, substantially planar electrode components spaced from each other;a sealing means around the perimeter of the unit; anda means to distribute electrical energy to each of said electrode components, said distributing means comprising:an electrically conductive, substantially rigid, planar electric current transmission element disposed in the space between said spaced electrode components said transmission element co-extensive with and extending beyond the perimeter of said electrode components and having a metallic electrical connection means attached to it suitable for conducting electrical current in or out of said transmission element;said transmission element being electrically and mechanically connected to each of said electrode components at a plurality of points spaced throughout the entire s

Abstract: The invention is an improved method for depositing a chromite coating onto a magnesium-containing material comprising:contacting the magnesium-containing material with a solution at least containing chromite ions and silicate ions for a time sufficient to deposit a corrosion resistant coating onto said magnesium-containing material;wherein the concentration of chromite ions in the solution is from about 0.2 to about 1.2 moles per liter; the concentration of silicate ions is from about 0.1 to about 0.3 moles per liter; the pH of the solution is from about 1 to about 5; and the temperature of the solution is from about 25.degree. C. to about 80.degree. C.

Abstract: Unitary, cast structural element for filter press electrolysis cell which incorporates into a single unit the central barrier between the peripheral boundaries for the adjacent anode compartment and adjacent cathode compartment of two electrolysis cells located on opposite sides of the central barrier. Also incorporated into the single cast structural element are anode component bosses and cathode component bosses extending outwardly from opposite sides of the central barrier. These bosses not only serve as mechanical support for their respective flat plate anode component and cathode component, but also they serve as stand-off means and electrical current collectors and dispersers from the cathode component of one electrolysis cell to the anode component of the next cell. Simplicity of design coupled with incorporation of many functional elements into one part eliminates many cell warpage problems, inherent high voltage problems and membrane "hot spot" problems.

Abstract: A process is disclosed for reducing sulphate ion concentration in an aqueous solution comprising sodium hydroxide. The process comprises adding sodium carbonate or bicarbonate to said aqueous solution to form an insoluble sodium carbonate-sodium sulphate double salt, removing said insoluble salt, and recovering a purified aqueous sodium hydroxide solution.

Abstract: Unitary, cast structural element for filter press depolarized electrolysis cell which incorporates into a single unit the central barrier between the peripheral boundaries for the adjacent anode compartment and adjacent cathode compartment of two electrolysis cells located on opposite sides of the central barrier. At least one of such compartments also contains a gas chamber. An oxygen-containing gas may be fed into a depolarized cathode chamber or an hydrogen-containing gas may be fed into a depolarized anode chamber. Also incorporated into the single cast structural element are anode bosses and cathode bosses extending outwardly from opposite sides of the central barrier. These bosses not only serve as mechanical support for their respective flat plate anode and cathode, but also they serve as stand-off means and electrical current collectors and disperses from the cathode of one electrolysis cell to the anode of the next cell.

Abstract: Fluorovinyl compounds having the formulaTLCF.dbd.CF.sub.2are prepared by reacting compounds having the formula ##STR1## for a time and at a temperature sufficient to form the vinyl compound: whereX=Cl, Br or I;Z=F, Cl, Br, OH, NRR', OA, or SA;R and R' are independently selected from the group consisting of hydrogen, an alkyl having one or more than one carbon atom, and aryl;A=Alkali metal, alkali earth metal, quaternary nitrogen, or R;L=oxygen or sulfur; andT=an alkyl or aryl radical which does not interfere with the reaction.

Abstract: Compounds represented by the general formulas ##STR1## are prepared by reacting halofluoropropylene oxides with fluorinated acid fluorides and ketones.

Abstract: The invention includes in its scope a method for electrochemically reacting a liquid with a gas in an electrochemical cell of the type having at least two electrodes separated by a liquid permeable separator. At least one of said electrodes is in physical contact with the separator and is porous and self-draining. A gas is flowed into at least a portion of the pores of the self-draining electrode and a liquid is controllably flowed through the separator and into the self-draining electrode at a rate about equal to the drainage rate of the electrode and in a quantity sufficient to fill only a portion of the electrode pores. The liquid and the gas are electrochemically reacted to form at least one nonvolatile product. Thereafter, the products of the electrochemical reaction are removed from said self-draining electrode.

Abstract: The invention includes within its scope a method for producing a dual porosity body from a substrate having a plurality of passageways traversing the substrate and connecting a first surface with a generally opposing second surface by depositing a solid material onto the walls of at least a portion of the passageways adjoining only the first surface and stopping the deposition when the diameter of the passageways being coated have been reduced to a predetermined value.