Carbon dioxide sensitivity of zeolitic imidazolate frameworks

Angew Chem Int Ed Engl. 2014 Jul 14;53(29):7471-4. doi: 10.1002/anie.201402082. Epub 2014 May 30.

Abstract

Zeolitic imidazolate frameworks of zinc, cobalt, and cadmium, including the framework ZIF-8 commercially sold as Basolite Z1200, exhibit surprising sensitivity to carbon dioxide under mild conditions. The frameworks chemically react with CO2 in the presence of moisture or liquid water to form carbonates. This effect, which has been previously not reported in metal-organic framework chemistry, provides an explanation for conflicting reports on ZIF-8 stability to water and is of outstanding significance for evaluating the potential applications of metal-organic frameworks, especially for CO2 sequestration.

Keywords: carbon dioxide; carbon sequestration; metal-organic frameworks; solvent-free reactions; zeolitic imidazolate frameworks.