Molecular Structure of Kerogen in the Longmaxi Shale: Insights from Solid State NMR, FT‐IR, XRD and HRTEM

Kerogen plays an important role in shale gas adsorption, desorption and diffusion. Therefore, it is necessary to characterize the molecular structure of kerogen. In this study, four kerogen samples were isolated from the organic‐rich shale of the Longmaxi Formation. Raman spectroscopy was used to determine the maturity of these kerogen samples. High‐resolution transmission electron microscopy (HRTEM), 13 C nuclear magnetic resonance ( 13 C NMR),...