Developments / New materials

OXYGEN-PERMEABLE MEMBRANES FOR DEEP PROCESSING NATURAL GAS INTO VALUABLE PRODUCTS

Tubular oxygen-permeable
ceramic membranes

The new nanostructured oxygen-permeable membrane materials have been developed.

The characteristics of materials:

• increased thermochemical stability;
• high electronic conductivity (~ 100 Cm/сm) in oxidizing and reducing environments;
• oxygen conductivity (~ 10^-1 Cm/сm) at T ≥ 800 ^oC;
• coefficient of thermal expansion (16-20)·10^-6 K^-1

Nanostructured oxides with the structure of perovskite

Domain structure of
membrane materials

Cross-domain boundaries - channels
for facilitated diffusion of oxygen

Ceramic membrane in section

AREAS OF USE:

1. Gas chemistry -conversion of natural gas into synthesis gas (CO + 2H2).
2. Power engineering
   • cathodes for solid oxide fuel cells;
   • efficient combustion of fuel