“…Study of these processes has been carried out either directly using structural methods [6,7] and the method of nuclear magnetic resonance [8][9][10], or indirectly, by examining the impact of conversion processes on the macroscopic characteristics of solid methane. This most clearly affects the vibrational spectra of methane in the range of translational and librational vibrations [11,12], as well as the thermophysical properties of methane, such as heat capacity [13,14], thermal conductivity [15], and density [16,17].…”