scholarly journals Organic Reactions and High Pressure. Molecular Theories of Partial Molar Volume.

1998 ◽  
Vol 8 (2) ◽  
pp. 96-103 ◽  
Author(s):  
F. Hirata ◽  
T. Imai ◽  
M. Irisa
Keyword(s):  
High Pressure ◽  
Molar Volume ◽  
Partial Molar Volume ◽  
Organic Reactions

High Pressure Carbon Behavior Induced from Carbide Hugoniots

1997 ◽  
Vol 499 ◽  
Author(s):  
T. Sekine ◽  
E. Takazawa ◽  
T. Kobayashi
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Molar Volume ◽  
Partial Molar Volume ◽  
High Pressures ◽  
Diamond Structure ◽  
Structural Variations ◽  
Diamond Phase ◽  
Type Carbide ◽  
Diamond Type

ABSTRACTInvestigations of Hugoniots the diamond-type carbides(various SiC) and NaCl-type carbides such as TiC give some insights into the high-pressure carbon behaviors. The experimental results of phase transitions of a-SiC and β-SiC, together with those of diamond-structure Si, imply that the candidate as post-diamond phase has sixfold coordination and that a possible transition pressure is about 1–2 TPa. The NaCl-type carbide Hugoniots indicate that sixfold coordinated C is very stable at high pressures. The partial molar volume of carbon in the NaCl-type carbides ranges between 1.4 to 2.6 cnvVg-atom C at 1 atm and reaches about 2.8 cm3/g-atom C at 100 GPa. Taking into account structural variations of the corresponding metals, the volume of the sixfold coordinated C is estimated to be 1.7 cm3/g-atom C, about half of that of diamond, and the post-diamond phase appears to be extremely hard.

scholarly journals Determination of density and excess molar volume of dimethyl sulfoxide + 1-allyl-3-methylimidazolium chloride mixtures at high pressure

2017 ◽  
Vol 130 ◽  
pp. 76-83 ◽  
Author(s):  
Laura de Pablo Nisa ◽  
José J. Segovia ◽  
Ángel Martín ◽  
M. Carmen Martín ◽  
M. Dolores Bermejo
Keyword(s):  
High Pressure ◽  
Dimethyl Sulfoxide ◽  
Molar Volume ◽  
Excess Molar Volume
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