DEVICE FOR COMPLEX INVESTIGATING MASS-EXCHANGE AND ELECTROCHEMICAL CHARACTERISTICS OF ION-EXCHANGE MEMBRANE

摘要

The invention relates to equipment used in the investigation of mass transfer and electrochemical characteristics of the ion exchange membrane under application of an electric current. A device for mass transfer studies and integrated electrochemical characteristics of the ion exchange membrane comprising a cell with six-chamber flow-through chambers, between which the reinforced investigated and auxiliary membrane. Measuring silver-silver chloride electrodes and capillaries Luggina-Haber, located on either side of the membrane investigated equidistant to its surface. The unit consists of three buffer tanks, one of them - with the working electrolyte solution and the other - with a predetermined concentration of the electrolyte solution is desalted, and third additional buffer capacity - desalted with a predetermined concentration of the electrolyte solution. In addition the installation comprises three tanks for feeding the respective solutions of electrolytes in the respective buffer capacitance via three pumps, conductivity, conductivity cells, a pH-meter, a combined electrode device providing a third dosing titrant additional buffer capacity magnetic stirrer. For the registration of potential and current task, as in the prior art, is used potentiostat and a voltmeter coupled to a personal computer. cell chamber through nozzles located in the channels with the slotted axially-spaced slots in the horizontal plane of the frame of each of the cameras six-chamber cell through conduits fluidly connected to the corresponding capacitance. Fittings inputs in electrode chambers of the cell is hydraulically connected by pipelines with a working buffer capacity of the electrolyte solution. Fittings inputs in both buffer chambers and the concentrating chamber conduit fluidly connected to the second cell buffer capacity with a working electrolyte solution. Choke enter the demineralization chamber hydraulically connected to the duct cell buffer tank with the electrolytic solution was desalted and third additional buffering capacity. The direction of flow of electrolyte solutions by means of valves located on the conduits. Fittings output electrode chambers six-chamber cell conduits fluidly connected to the respective receptacle, for supplying the operating electrolyte solution. Fittings output buffer chambers and concentrating chambers six-chamber cell conduits fluidly connected to the tank for discharging spent electrolyte solution. Choke desalting chamber exit conduit fluidly connected to the reservoir for draining spent electrolyte solution and with a capacity for supplying the electrolyte solution in the third additional buffering capacity. The third additional buffer capacity is desalted with an electrolyte solution disposed conductivity cell is electrically connected to the conductivity meter, the combination electrode is electrically connected to a pH meter, and a device that provides dosing titrant. To maintain a constant level of electrolyte solution in buffer tanks and containers for supplying electrolyte solution three pumps used. The device universal, simple instrumentally and operation and allows complex examine electrochemical behavior of the ion exchange membrane in a superimposed electric field. 1 ab. n. f-ly, 6 of FIG. 2 pr.