DOI:10.1126/SCIENCE.275.5304.1279 - Corpus ID: 36248590
Neptune's Deep Chemistry
@article{Hubbard1997NeptunesDC, title={Neptune's Deep Chemistry}, author={William B. Hubbard}, journal={Science}, year={1997}, volume={275}, pages={1279 - 1280}, url={https://api.semanticscholar.org/CorpusID:36248590}}- W. B. Hubbard
- Published inScience28 February 1997
- Chemistry, Environmental Science, Physics
In his Perspective, Hubbard discusses simulations reported in the same issue by Ancilotto et al. suggesting that C2H6 may be produced by high-pressure chemical reactions deep within the planet.
37 Citations
37 Citations
Polymerization and diamond formation from melting methane and their implications in ice layer of giant planets
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Physics, Environmental Science
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The phase diagrams of water and ammonia were determined by constant pressure ab initio molecular dynamic simulations at pressures (30 to 300 gigapascal) and temperatures (300 to 7000 kelvin) of relevance for the middle ice layers of the giant planets Neptune and Uranus to improve the understanding of the properties of the middle icy layers.
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The pressure and temperature conditions at which precipitation of diamond occurs from hydrocarbon mixtures is important for modelling the interior dynamics of icy planets. However, there is…
New windows on earth and planetary interiors
Abstract Recent diamond-anvil cell experiments are providing windows of unprecedented clarity on the interiors of the Earth, other planets, and their moons from high P-T studies of the materials that…
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Chemistry, Environmental Science
This work shows that water has an unexpected role in catalysing complex explosive reactions--contrary to the current view that it is simply a stable detonation product, and suggests that water may catalyse reactions in other explosives and in planetary interiors.
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Physics, Environmental Science
Water has been proposed to be one of the main compositions of icy giant planets like Neptune and Uranus. Its thermodynamic states and transport properties at extremes are of interest not only to…
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Physics
The results confirm a recently observed substantial quantum kinetic isotope effect and reveal that the change of the rotational or vibrational state of the molecule can strongly enhance or suppress the reaction.
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Constant-pressure, first-principles molecular dynamic simulations were used to investigate the behavior of methane at high pressure and temperature, and suggest that, below 100 gigapascals, methane dissociates into a mixture of hydrocarbons, and it separates into hydrogen and carbon only above 300 gigapascalals.
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The first reconnaissance of all the major planets of the Solar System culminated in the Voyager 2 encounter with Neptune in August 1989. Neptune itself was revealed as a planet with gigantic active…
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