Equimolar Carbon Absorption by Potassium Phthalimide and In Situ Catalytic Conversion Under Mild Conditions

• DOI: 10.1002/cssc.201400133
• Publication Date: 2014-03-26T20:35:44Z
• Authors: Shuai Zhang; Yu‐Nong Li; Ya‐Wei Zhang; Liang‐Nian He; Bing Yu; Qing‐Wen Song; Xian‐Dong Lang
• Keywords: Magnetic Resonance Spectroscopy; Formates; Molecular Structure; Phthalimides; Carbon Dioxide; 01 natural sciences; Catalysis; 0104 chemical sciences; Absorption, Physicochemical; Spectroscopy, Fourier Transform Infrared; Carbamates; Renewable Energy

AbstractPotassium phthalimide, with weak basicity, is an excellent absorbent for rapid carbon dioxide capture with almost equimolar absorption. This process is assumed to proceed through the potassium carbamate formation pathway, as supported by NMR spectroscopy, an in situ FTIR study, and computational calculations. Both the basicity and nucleophilicity of phthalimide salts have a crucial effect on the capture process. Furthermore, the captured carbon dioxide could more easily be converted in situ into value‐added chemicals and fuel‐related products through carbon capture and utilization, rather than going through a desorption process.