Cyclic Stability Testing of Aminated-Silica Solid Sorbent for Post-Combustion CO2 Capture

The National Energy Technology Laboratory (NETL) is examining the use of solid sorbents for CO2 removal from coal‐fired power plant flue gas streams. An aminated sorbent (previously reported by the NETL) is tested for stability by cyclic exposure to simulated flue gas and subsequent regeneration for 100 cycles. Each cycle was quantified using a traced gas in the simulated flue gas monitored by a mass spectrometer, which allowed for rapid determination of the capacity. Best flu treatment: An amine‐based sorbent is examined for use in CO2 removal from flue gas streams in coal‐fired power plants. Cyclic testing results show the stability of the amine‐based sorbents over 100 cycles. Furthermore, a rapid method for measuring capture capacity using a tracer gas is developed and confirmed through quantification of the CO2 released during regeneration.