(302c) 300°C Proton-Exchange Membrane for Low-Pressure Electrolytic Ammonia Synthesis
AIChE Annual Meeting
Tuesday, November 12, 2019 - 11:06am to 11:29am
The two North Dakota universities and Proton OnSite are developing a 300Â°C-capable polymerâinorganic composite (PIC) proton exchange membrane for low-pressure (15-psi) ammonia synthesis. The PIC membrane comprises an inorganic proton conductor strategically composited within a high-temperature polymer to enable a proton conductivity of 10-2 siemens/centimeter at 300Â°C. Integrated with appropriate low-cost anode and cathode catalysts in a membraneâelectrode assembly, the gas-impermeable PIC membrane is projected to enable ammonia production at a total energy input of about 6400 kilowatt-hours/ton (kWh/ton), versus about 8500 kWh/ton for state-of-the-art Haber Bosch-based ammonia production. The PIC membrane will also have application in high-temperature water electrolysis for lower power-consumption lower-cost high-purity hydrogen production. Data and information regarding PIC membrane fabrication, performance, and durability will be presented.
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