Metal-organic frameworks (MOFs) are of interest for CO2 sequestration and storage due to their porosity and the large number of structures that are possible. CO2 interacts strongly with primary and secondary alkyl amines, both in solution and in the solid state. This has led to the prediction that polyamine-based MOFs will have high CO2 capacity.
Roger Guilard and colleagues, Université de Bourgogne, France, have integrated an aza ligand into the framework of a MOF adsorbent. The new MOF uses an N-functionalized triazamacrocycle as a spacer ligand and is the first time that a rigid framework has been made from a flexible amine building block. The resulting MOF was shown to have a high surface area, a high adsorption capacity of CO2 of up to 88 cm3g–1 at 1 atm, and high selectivity for CO2 over CO, CH4, N2 and O2, making it a competitive material for CO2 capture applications.
- Selective CO2 Adsorption by a Triazacyclononane-Bridged Microporous Metal–Organic Framework
G. Ortiz, S. Brandès, Y. Rousselin, R. Guilard,
Chem. Eur. J. 2011.
DOI: 10.1002/chem.201003680
1. lot of cry over CO2 emissions from heavy industries 2.CO2 along with NH3 good source for urea. H2 for ammonia synthesis can be made by electrolysis of water using concentrated solor power 3. CO2 can be used for exraction fine and valuable organic materials. 4. CO2 can be reduced to CO and in combination with H2 foms syn gas which can be use to produce CH3 OH and DME valuable alternate fuel fo IC engines. DME can replace LPG for household purposes. 5. CO2 iin large quantities can help fire hydrant systems where water is scarce. 6. CO2 a good refrigerant bottom line : there should be a holistic approach in the utilization of CO2 as a raw material and financial/ commercial / envionmental viability established segmentwise. K.Govindarajan, Petchem (E) Consultants, India