Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5

Bi2O3 - CuO phase diagram, Bi2O3 - Cu2O phase diagram, Dependence of mass ratio (m_(〖Bi〗_2 O_3 )/m_(Cu ) ) on partial pressure of oxygen,, Dependences of oxygen fluxes through CuO - 25 wt% Cu5V2O10 diffusion-bubbling membrane on oxygen partial pressure difference (j_(O_2)^solut is the oxygen flux caused by solutocapillary force, j_(O_2)^exp is the experimental oxygen flux, and j_(O_2)^grav is the oxygen flux caused by gravity force), Bubble density in core of CuO - 25 wt% Cu5V2O10 diffusion-bubbling membrane vs logarithm of ratio of partial pressures of oxygen