Methane anomalous properties

Ross and Andersson (1982) suggested that this behavior, which was never before reported for crystalline organic materials, was associated with the properties of glassy solids. Waite et al. (2005) measured the temperature dependence of porous methane hydrate thermal conductivity. Early work on this anomalous property led to the development of a thermal conductivity needle probe (Asher et al., 1986) as a possible means of in situ discrimination of hydrates from ice in the permafrost. 

The study of very dilute solutions of simple solutes such as argon, methane, and the like is of interest for various reasons. First, these solutions reveal some anomalous properties in comparison with non-aqueous solutions and therefore present an attractive challenge to chemists, physicists, and biochemists. Second, aqueous solutions of a simple solute may be viewed as pure water subjected to a weak external field of force. Therefore, the study of such systems can contribute to our understanding of pure liquid water itself. Finally, and most... 

Here is one odd but hugely important anomalous property. A water molecule is only slightlyheavierthanamethane molecule (CH C denotes a carbon atom) and an ammonia molecule (NH3, N denotes a nitrogen atom). However, whereas methane and ammonia are gases, water is a liquid at room temperature. Water is also nearly unique in so far as its solid form, ice, is less dense than its liquid form, so ice floats on water. Icebergs float in water methanebergs and ammoniabergs would both sink in their respective liquids in an... 

Methane hydrate is a clathrate compound of water molecules surrounding a methane molecule. Natural methane hydrate is found in permafrost and deep-sea sediment, and has recently attracted much attention as a potential new resource because of the large amount of deposits. Methane hydrate is also expected as new materials for gas storage and transportation due to its unique properties called anomalous preservation, quite slow dissociation from -40 to -10°C at atmospheric pressure, despite of its dissociation over -80"C. ... 

Methane hydrate has an unclear property called the self-preservation or anomalous preservation effect, i.e., slow dissociation of the hydrate under thermodynamically unstable conditions. This slow dissociation is thought to be caused by a layer of ice covering hydrate surfaces that forms from the dissociated hydrate. However, little is known about this preservation mechanism. For example, it is still unclear that this effect is not observed between 193-240 K but above 240... 

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