Optical-cell evidence for superheated ice under gas-hydrate-forming conditions
Article Abstract:
A study was conducted to analyze superheated ice under gas-hydrate-forming conditions. A small high-pressure optical cell that duplicated the hydrate-synthesis process was utilized to carry out the analysis. Experimental results indicated the presence of hydrate-coated ice grains at 290 K at 30 MPa in CH4 and282 K at 6 MPa in CO2. Findings also showed that the initial surface characteristics of the ice grains were not altered until the grains were warmed to the H2O liquids.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Isothermal compressibility maxima of hydrogen fluoride in the supercritical and superheated vapor regions
Article Abstract:
The potential existence of a second peak in the isothermal compressibility of hydrogen fluoride (HF) that extends from the superheated vapor (SHV) region into the supercritical (SC) regions is explored. The isothermal compressibility ([K.sub.T]) has resulted with and without a Poisson-type oligomer distribution, indicating that once this distribution scheme is specified, the [K.sub.T] appears.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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Using heat capacity and compressibility to choose among two-state models of liquid water
Article Abstract:
Several models have expressed the properties of liquid water in terms of contributions from low-density and high-density components. The Robinson model is superior for isothermal compressibility ([[kappa].sub.T]) and it has given the most reliable compositions and individual-component properties.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2007
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