Disclosed herein are ultra-microporous metal organic frameworks based on isonicotinate and its derivatives that selectively and reversibly bind CO2 and can be used in methods for removing CO2 from a fluid stream containing at least CO2 and one other component. Also described are methods for preparing these NiMOF1 and NiMOF2. ACKNOWLEDGEMENT We thank Dr. Tom Woo from the Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, Canada, for his help with obtaining some of the CO2 binding energies via computational simulations. We thank Enovex Inc., St. John, New Brunswick, Canada, for supporting part of our instrumentation.
