Comment on 'Nickel nanoparticles catalyse reversible hydration of carbon dioxide for mineralization carbon capture and storage' by G. Bhaduri and L Siller, Catal. Sci. Technol., 2013, 3, 1234

摘要

The identification of a cheap, stable catalyst to replace the enzyme carbonic anhydrase for the rapid hydration of CO2 is an important goal in the effort to reduce the price of carbon dioxide capture and storage (CCS). In their recent article Bhaduri and Siller report that a 30 ppm solution of colloidal nickel nanoparticles leads to a three-fold increase in CO2 hydration rate relative to DI water.1 They make this claim based on pH measurements made while bubbling CO2 through the respective solutions. This comment addresses significant problems with the experimental technique leading to these data. These issues call into question the conclusion of the paper, namely that the Ni nanoparticles lead to an increase in CO2 hydration rate.