CO₂ removal at high temperature from multi-component gas stream using porous ceramic membranes infiltrated with molten carbonates

This work reports on the investigation of CO₂ selective membranes for pre-combustion and post- combustion processes, in which CO₂ is extracted from multi-component gas streams at intermediate temperature (400 – 600 °C). The dual-phase membranes developed in this work are designed as a porous oxide ion conducting ceramic matrix, which is infiltrated with a molten carbonate phase. Both ex-situ and in-situ characterization methods were used to study disk shaped and tubular membranes. The gas transport properties of disk-shaped membranes were further investigated under various operating conditions relevant for both post-combustion and pre-combustion applications.