METHOD OF DETERMINING KINETIC PARAMETERS CHARACTERIZING THE EXCHANGE PROCESS OF GAS PHASE OXYGEN WITH OXIDE MATERIALS Russian patent published in 2016 - IPC G01N7/14 

FIELD: measurement technology.

SUBSTANCE: invention is aimed at development of determining possibility of interphase oxygen exchange speed and speeds of three types of oxygen exchange and oxide materials. Sample of the analyzed material is placed in a flow reactor, the mixture of inert gas with oxygen of preset oxygen partial pressure is passed and after equilibrium establishing between the sample and the gas phase at the selected values of partial oxygen pressure and temperature. Then two and/or more pulses isotope-rich mixture of different volume is applied in-series in the flow reactor, after passing through two and/or more pulses isotope-rich mixture of different volume, two and/or values more pairs of isotopic composition of pulse isotopically-enriched mixture are obtained before and after different exposure times passing over the sample. Then the obtained values are used to calculate phase exchange rate of oxygen and speeds of three types of oxygen exchange by the theory of three types of oxygen exchange.

EFFECT: technical result is possibility of obtaining information on content of isotope in a pulse before and after the pulse passing, on the basis of which it becomes possible to calculate speed with higher accuracy of interphase oxygen exchange and principal possibility to calculate speed of three types of oxygen exchange.

1 cl, 3 dwg