CO2
"Amine Functionalized Nanoporous Materials for Carbon Dioxide Capture", Feng Zheng, R. Shane Addleman, Chris Aardahl, and Glen E. Fryxell, in Environmental Applications of Nanomaterials: Synthesis, Sorbents and Sensors; G. E. Fryxell and G. Cao, eds.; published by Imperial College Press, 2007, 285-312.
"Ethylenediamine-modified SBA-15 as Regenerable CO2 Sorbent", Feng Zheng, Diana N. Tran, Brad Busche, Glen E. Fryxell, R. Shane Addleman, Thomas S. Zemanian, Christopher L. Aardahl, Industrial Engineering and Chemical Research 2005, 44, 3099-3105.