Thermal and Composition Expansion of Clathrates in the Ethylene Oxide—Water System
1967; American Institute of Physics; Volume: 47; Issue: 10 Linguagem: Inglês
10.1063/1.1701545
ISSN1520-9032
AutoresJohn A. McIntyre, D. R. Petersen,
Tópico(s)Inorganic Fluorides and Related Compounds
ResumoNonstoichiometric clathrate compounds of ethylene oxide and water form cubic phases of composition xC2H4O·46H2O, where the theoretical maximum x is 8. Through x-ray diffraction experiments, thermal expansion relations were established for several specific compositions (x = 1.08, 2.32, 3.72, 6.75) over the temperature range from −140° to −20°C. It was found that in each case, the relative thermal expansion of the clathrate was greater than that of normal ice over matching ranges. At any given temperature in the range studied, a sharp break was observed in the composition expansion curve at about x = 3, for which a reasonable explanation has been provided.
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