Yu ZHANG, Rongda LIANG, Huijie XU, Chuanshan TIAN. Recent Advances on Experimental Study of Nucleation Process of Methane Hydrate （Invited）[J]. Acta Photonica Sinica, 2021, 50(8): 0850205
- Acta Photonica Sinica
- Vol. 50, Issue 8, 0850205 (2021)
Fig. 1. Phase equilibrium condition curves of clathrate hydrates with different guest molecules［3］
Fig. 2. Schematic diagram of common hydrate crystal structure［14］
Fig. 3. Schematic diagram of the relationship between methane hydrate formation process and methane gas consumption （constant pressure， constant temperature） over time［41］
Fig. 4. Schematic diagram of unstable cluster nucleation hypothesis［44］
Fig. 5. Molecular dynamics simulation results of hydrate cluster structure evolving with time［23］
Fig. 6. Nucleation mechanism of blob hypothesis based on molecular dynamics simulation［26］
Fig. 7. The growth process of hydrate on the surface［50］
Fig. 8. Schematic diagram of memory effect： the curve of continuous rise and fall of methane hydrate［52］
Fig. 9. Infrared and Raman spectra of methane hydrate
Fig. 10. Neutron diffraction spectrum and X-ray diffraction spectrum of methane hydrate
Fig. 11. Simulation results of the density distribution of methane and water molecules at the methane-water interface［64］
Fig. 12. Schematic diagram of non-collinear sum-frequency vibration spectrum measurement system and femtosecond amplifier system
Fig. 13. Raman spectrum of water （D2O） at a temperature of 4.3 ℃， 0.1 MPa （1 atm） and 8.0 MPa methane gas pressure
Fig. 14. Sum frequency vibrational spectrum of methane hydrate at the interface
Fig. 15. Changes of Dangling-OD during the formation of methane hydrate
Fig. 16. Sum-frequency vibrational spectroscopy results before and after forming a thin layer of hydrate and remelting
Fig. 17. Schematic diagram of the formation process of methane hydrate at the methane-water gas-liquid interface
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