Figure 4
From: Self-preservation and Stability of Methane Hydrates in the Presence of NaCl
Recorded powdered X-ray diffraction patterns for the solid phases in the CH4-H2O-NaCl system. PXRD was recorded at 150 K. Top (A), and bottom (C) segments correspond to hydrate systems with 0.0, and 15.0 wt% NaCl and the middle (B) trace is with 3.0 wt% NaCl. Computed diffraction peak positions for cubic hydrate (Pm3n), hexagonal ice (P63/mmc) and monoclinic hydrohalite (P21/c) are represented by red, blue and green coloured bars respectively. Blown-up portions of the low-angle diffraction peaks are shown as insets for clarity.
