A team of researchers at the University of Kentucky have developed highly active homogeneous catalysts for the capture of carbon dioxide in post-combustion processes. The complexes, based on zinc and cobalt metal centres, increase mass transfer by up to 34% in concentrated, aqueous solutions of primary amine.
Carbonic anhydrase metalloenzymes are known as the most active catalysts for the hydration of carbon dioxide under mild conditions. The catalysts reported here are inexpensive alternatives that can better tolerate the harsh conditions of industrial gas streams.
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K. Liu et al., Catal. Sci. Technol. 2014, Advance Article