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Paleoclimate Saw-tooth pattern & natural gas clathrate hydrates

Paleoclimate Saw-tooth pattern & natural gas clathrate hydrates. Chung-Chieng Lai. Henry’s Law: concentration in water = K × pressure in air. Saw-tooth pattern; Temperature leads CH 4 that leads CO 2. 570. catalyst. CO 2 + 2 H 2 O + Heat. CH 4 + 2 O 2. Bacteria, etc.

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Paleoclimate Saw-tooth pattern & natural gas clathrate hydrates

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  1. Paleoclimate Saw-tooth pattern& naturalgas clathrate hydrates Chung-Chieng Lai

  2. Henry’s Law: concentration in water = K × pressure in air

  3. Saw-tooth pattern; TemperatureleadsCH4that leads CO2 570

  4. catalyst CO2 + 2 H2O + Heat CH4 + 2 O2 Bacteria, etc. Heat: 195,000 cal / mole of CH4 810,000 J

  5. 400 750 (a) (c) 200 400 (b) (d)

  6. Methane hydrate Structure I binary hydrate: 46H2O + 6(mG) + 2(sG) sG – small-size gas, such as N2 mG – medium-size gas, such as CH4

  7. Clathrasil (mineral) at work 46 SiO2·6(lG)·2(sG) sG: N2, Ar, Xe, CH4 lG:N2O, CO2, Kr, Xe, CH3NH2 (methylamine)

  8. Phase boundary plots Gas hydrate solid to gas phase boundary: T = T0+ a log (P/P0) (1) T, T0, a : temperature P, P0: pressure Dissociation: Gas hydrate → gas + water

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