Development Themes

Development Themes

Membrane separation

The Chemical Research Group has been developing high performance CO2 separation membranes to reduce the IGCC CO2 separation and collection costs. This work is based on pressure-resistant composite membranes incorporating dendritic polymers with regular branching structures bearing high-density amino groups. These membranes have applications in the CO2/H2 separation process at pressure differences of 2–4 MPa, and may be used in CO2 separation and capture from shifted syngas in the IGCC process. A conceptual diagram of the CO2 molecular gate membrane is shown in Figure.

The use of this material blocks the permeation of hydrogen gas due to the quasi-crosslinking of CO2 in the membrane, and therefore allows significantly higher CO2 selectivity than conventional polymer membranes.


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