RESEARCH METHOD OF KINETICS OF INTER-PHASE EXCHANGE IN "GAS-ELECTROCHEMICAL CELL SYSTEM WITH USE OF ISOTOPE EXCHANGE UNDER CONDITIONS OF ELECTRODE POLARISATION Russian patent published in 2017 - IPC G01N30/96 

FIELD: electricity.

SUBSTANCE: sample under study at room temperature and pressure is placed in a quartz reactor through which gas is circulated through a gas loop linked with the reactor to form a common gas space, the gas loop with the reactor is pumped to a high vacuum, the communication between the mass spectrometer and the gas loop is opened, mass spectrometer is used to stabilise the ion current of mass numbers 18, 28 or 32, set the temperature and pressure at which measurements are to be taken, the sample under study is brought to equilibrium with the gas phase, block the communication of the reactor with the gas loop, oxygen of natural isotopic composition is evacuated from the gas loop, and ¹⁸O-enriched isotope oxygen is injected, the ion current for mass numbers 32, 34, 36 is recorded as a function of time by means of a mass spectrometer, establish a constant flow between the gas loop and the mass spectrometer, then open the reactor and begin the process of research using isotopic exchange. As the test sample, the electrochemical cell is placed in the quartz reactor separating the common gas space into two parts, and after equilibrium between electrochemical cell and the gas phase is established, the reactor's communication with one of the parts of the divided gas space is blocked and the oxygen of natural isotopic composition is pumped out of the remaining part and ¹⁸O-enriched isotope oxygen is injected. At the moment of opening of reactor's communication with one of the parts of the divided gas space, voltage is applied to the electrodes of the electrochemical cell.

EFFECT: utility invention is aimed to study the kinetics of inter-phase exchange in the gas-electrochemical cell system using the isotopic exchange method under conditions of electrode polarisation.

2 cl, 5 dwg