As a glassy thermoplastic, with exceptional thermal stability (427°C Tg), broad chemical resistance, and the ability to function as a proton-acceptor or proton-donor, PBI is uniquely suited for moving protons, hydrogen, and water. For these reasons, PBI is highly suited for H2/CO2 separation membranes, fuel cell proton exchange membranes, redox flow battery separator membranes, water purification membranes, and organic chemical pervaporation dehydration membranes — all for use at high temperature and pressure.
With high H2/CO2 selectivity and excellent high temperature stability, Celazole® PBI hollow-fiber membranes are being tested by the US Dept. of Energy to reduce power plant carbon emissions by 90%.
Thermal stability and broad chemical resistance allow Celazole® PBI PEM (proton exchange membranes) to operate at higher temperatures and increase operational efficiency.
PBI hollow fiber membranes can be used in producing blue hydrogen and blue ammonia; capturing the CO2 generated by steam methane reforming or auto thermal reforming to yield a climate friendly pure hydrogen product stream.
Celazole® PBI-based membranes have been developed for the production and recycling of organic chemicals and solvents like ethanol, tetrafluoropropanol, ethylene glycol, and acetic acid which are characterized by energy intensive hard-to-distill azeotropic mixtures.
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