NMR Characterization of Biochars
نویسنده
چکیده
Nuclear magnetic resonance spectroscopy (NMR) uses a very strong magnetic field and radio frequency (RF) pulses to study the structure of molecules through the resonance frequencies of specific nuclei within the molecule. In order to characterize biochars, several solid-state techniques utilizing C and H nuclei can be used to determine the relative quantity of carbon functional groups, the approximate degree of condensation of the aromatic rings, and the overall structure of the char molecules. The following describes some of the theory of NMR and how chars are characterized at Iowa State University.
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