Celazole® PBI is highly suited for producing carbon capture, pervaporation dehydration, and fuel cell membranes.

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, and organic chemical pervaporation dehydration membranes – all for use at high temperature.

1,000 hours

PBI membranes have demonstrated commercially attractive H2/CO2 selectivity and tolerance to H2S, CO and steam in a 1,000 hour test at 225°C, 200 psi delta-P.


Celazole® PBI is being used in the development of hollow fiber membranes for pre-combustion carbon capture to meet the US Dept. of Energy’s Carbon Capture Program performance goal of 90% CO2 capture for less than $40/tonne by 2025.

Pervaporation dehydration membranes

Manufacturers of organic chemicals and solvents, like tetrafluropropanol, ethylene glycol and acetic acid, can benefit from the water selectivity and solvent resistant nature of Celazole® PBI-based pervaporation dehydration membranes to produce very pure chemicals at a fraction of distillation costs.


Carbon capture membranes

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% in 2025.

Fuel cell membranes

Thermal stability and broad chemical resistance allows Celazole® PBI PEM (proton exchange membranes) to operate at higher temperatures and increase operational efficiency.

Pervaporation dehydration membranes

Celazole® PBI-based membranes have been developed for the production and recycling of organic chemicals and solvents like tetrafluoropropanol, ethylene glycol, and acetic acid which are characterized by hard-to-distill aggressive chemistries.

Learn how Celazole® PBI is revolutionizing polymer membranes


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